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Dominator® Synthetic 5W-20 Racing Oil (RD20)

 Dominator Synthetic 5W-20 Racing Oil (RD20)
Product Code: RD20 • Brand: AMSOIL

AMSOIL Dominator® Synthetic 5W-20 Racing Oil (RD20) provides superior performance and maximum protection in high-performance and racing applications. DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
55-Gallon Drum

See Pricing or Place an Order
MSDSData Sheet

Product Details

Product Applications

DOMINATOR Synthetic Racing Oil is compatible with leaded and unleaded gasoline, diesel, alcohol, nitromethane and nitrous oxide.

Use DOMINATOR 5W-20 Synthetic Racing Oil in domestic and import racing and high-performance street engines where an SAE 20 viscosity oil is suitable, including (not limited to):

Product Application Specs

• Modified small block
• Asphalt late model
• Bracket
• Midget

AMSOIL Ea® Racing Air Filters (EAAR) are specially designed for racing and street rod enthusiasts who desire AMSOIL Ea protection in carbureted applications. AMSOIL Ea Racing Air Filters are constructed with synthetic, providing maximum protection and extended filter life.

Product Description

AMSOIL DOMINATOR® Synthetic Racing Oil provides superior performance and maximum protection in high-performance and racing applications. DOMINATOR is engineered to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications. Its robust formulation, tested and validated by championship race teams, is designed to provide maximum horsepower without sacrificing engine protection. DOMINATOR provides straight-grade protection in a multi-grade formulation.

Fights Engine Wear

DOMINATOR Synthetic Racing Oil's durable formulation resists viscosity loss due to mechanical shear to maintain a strong protective oil film. It is heavily fortified with zinc and phosphorus anti-wear additives to provide additional protection against scuffing and wear in severe racing conditions.

Maximizes Horsepower

DOMINATOR is formulated with a proprietary friction modifier to reduce energy lost to friction. It delivers maximum horsepower and cooler engine temperatures, promoting improved lap times and longer-lasting components.

• Formulated specifically for racing & high-performance engines
• Robust formulation resists viscosity loss
• Proprietary friction modifier maximizes horsepower & torque
• Fortified with anti-wear additives for extra protection

Excellent All-Temperature Performance

DOMINATOR provides maximum protection in temperature extremes. Its low pour point offers excellent start-up protection and provides less drag when the oil has not reached stable operating temperatures. At elevated operating temperatures, it maintains superior film strength. DOMINATOR's thermally stable synthetic chemistry resists the effects of intense heat common to racing engines to provide reliable protection for the duration of the race.

Commercial Availability

Many oil companies produce specialty racing oils for elite groups and do not offer them to the general public. For example, several popular oil manufacturers produce racing oils offered only to NASCAR teams. DOMINATOR Synthetic Racing Oil is already formulated to a high level of performance. It provides maximum performance and superior protection to all racers, regardless of their competition level. The same DOMINATOR Synthetic Racing Oil that is used in the engines of AMSOIL corporately sponsored racers, including Scott Douglas and Brad Lovell, is available to everyone.

Service Life

Consider the event, application and viscosity needs. When competing, the vehicle owner is responsible for determining an appropriate oil service interval. DOMINATOR is not intended for long-term use in passenger cars/light trucks.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL RD20.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

Technical Data

TYPICAL TECHNICAL PROPERTIES
Dominator® Synthetic5W-20 Racing Oil (RD20)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)9.0
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)50.8
Viscosity Index (ASTM D-2270)158
CCS Viscosity (°C), cP (ASTM D-5293) 4954 (-30)
Pour Point °C (°F) (ASTM D-97)-48 (-54)
Flash Point °C (°F) (ASTM D-92)232 (450)
Fire Point °C (°F) (ASTM D-92)246 (475)
Four Ball Wear Test
(ASTM D-4172B: 40 kgf, 150°C, 1800 rpm, 1 hr), Scar, mm
0.39
Noack Volatility, % weight loss (g/100g) (ASTM D-5800)8.0
High-Temperature/High-Shear Viscosity 150°C, 1.4 x 106s-1, cP (ASTM D5481)3.1

 Dominator Synthetic 5W-20 Racing Oil (RD20)

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Product Name: Dominator® Synthetic 5W-20 Racing Oil (RD20)
Current Rating: 5out of 5 stars
Votes & Reviews: 15 vote(s) and 92 user reviews.


A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Darrell: space

Buy only the best oil for your car or truck!!

This is the best oil you can buy Does a car eng. good !!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ron: space

Yes!!

Dropped my water temp by 12 degrees !! Great product !

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert: space

I will continue using this oil..

I use this product in my street rod, a 1930 ford with a 466 inch ford motor. I believe the oil is dewing its job but when I been submitting the oil for testing I am getting results that do not make sense. Other wise I will continue using this oil..

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jj: space

Great oil, run amsoil in everything I own

Great oil, run it in our Briggs animal kart motors on methonal... Keeps the motor at cooler running temps

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jim: space

Nothing But the Best

I wouldn't use anything else in our racing engine. This engine had 300,000 miles on it when we put it in our racecar. Now, in the racecar, it's lasted 2 full seasons and still going strong.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Fred: space

The only oil we use for hard racing

We run this in our imca 604 crate engine works great

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John: space

Top notch oil.

Best there is!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Christopher: space

Z-Rod is the best for forced induction

Works great in my supercharged Vette!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeremy: space

Great product, I'll be purchasing more soon

Great product and customer service

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John: space

I've used it for years and feel it is the best you can buy

Necessary to maintain the 1966 396 engine in my Super Sport. Full synthetic has many added values over conventional oil especially in cars that get low mileage, irregular usage.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Stephen: space

Best oil

Great oil for my 60 yr old car, I also amsoil in modern cars better fuel mileage

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Delbert: space

Love it!

As usual awesome stuff!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeremiah: space

I'm sure I won't be disappointed

I use Amsoil in all my vehicles. Bought this for my 1977 Ford F-250 after the top end of the original 351M was rebuilt. Thought it would be the right choice for this classic motor. Time will tell.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brenda: space

Older Cars:

This is beneficial to eliminate wear in older cars from the oil not having zinc. Very happy with this product and recommend it.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Eric: space

I will buy this oil again, it is the only oil to use

I use this oil in a pair of merc 540's, which have been dyno'd over 600hp. It's the only oil I will use and with over 300 hours on these engines, this says it all.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ron: space

BMW OIL

Great oil for BMW airheads

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dave: space

The perfect "old car" oil

I've used Amsoil for years in all my diesels now it's time for my old cars too. Great product and I'm very happy with the results

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dennis: space

Pampering my baby!

This goes into my '69 Corvette, 427 internal protection is the target for this oil. I like the rust inhibitor that is present to protect the internal components of the engine when it is inactive and the over all protection when I take her out for a drive. A good oil at a good price.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by George: space

I will continue to purchase this product

Perfect weight for a big block Chev, doesn't blow through the motor while racing, like similar oils do. Great product from a great company

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Hector: space

No other oil for my Chevy 540

I've tried a number of different motor oils over the years. Mobil 1, Royal Purple and a few others. Amsoil Z-Rod is definitely the best oil I've ever used in my Reher Morrison Chevy 540 big block. The engine maintains a higher oil pressure even on a hot day! Appears I've gained additional horsepower also!
Provides peace of mind knowing my motor is protected and producing maximum power!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Michael: space

Great oil

Using it in my mower engine running cooler and oil is staying clean after 20 hour of running hard.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jason: space

Best product of its kind on the market

The only oil I'll use in my racecars

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Looj: space

The only oil that I use for everything

If you dont want to wipe out cam lobes, USE THIS PRODUCT!!!!!!!!!!!!!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by moros323: space

This is top notch racing oil!

I have been running Amsoil in my last 3 cars I love it and the protection it offers!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Classic's for life: space

I would buy this again

Bought it for a 73 mustang. Love the product.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dave: space

The best

Perfect for a air cool VW

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by the Painter: space

Hot Rod Oil

I bought this oil based on the fact that it has extra added Zinc for flat tappet cams generally used in hot rod motors and the fact it is known in the hobby to be excellent oil.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by cmart: space

Great for high zinc engines

Used product for engine with high compression and required high zinc content

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Huck: space

I like Amsoil prodoucts.

I have a '73 Bronco with a 302 V-8 engine. It has a mild flat tappet cam and a few other goodies. Because of the 'flat tappet cam' the engine needs oil with zinc. The Amsoil Z-ROD Syn. is exactly what the 302 ci. needs as it contains high levels of ZDDP for max. protection.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by CharlieB: space

Good for Old Jeeps

I use this product in my 1952 M38A1 Willy's Army Jeep
The engine runs quiet and smooth with this oil

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike "Mad Scientist": space

Great products for my business/shop.

I have been a long time Amsoil user myself for all my racecar/street car applications. When I opened my shop it was only fitting to stick with the best! All my customers cars/builds get Z-rod or Dominator series and with great results.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert: space

Love amsoil

Amszoil is the best Oil I've ever used I'm back to using it after realizing the higher price is worth the way higher quality

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by G: space

Good stuff!

Use in my 1969 Corvette.
Plan to start using in my 79 280ZX and 80 Bronco

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Drivr51: space

Run this in my 602 circle track crate engine

I use this product in my 602 crate circle track engine to optimize HP all the meantime protecting my engine from the harsh elements. Love this oil.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

Amsoil 10W-30 for my 1969 Dodge Charger 426 Hemi

I wanted the best flowing highest zinc content for my Hemi Charger. Amsoil was my choice. Cost a little more but only the best for my baby!!!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tacomaracing: space

Excellent racing oil.

Best racing oil I have used in high horsepower racing go karts.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by MotoMack: space

Been using Amsoil 15w50 Dominator for over 10 years

I use this in my EBR1190rx race bike, engine has been raced or on track for 8000 miles, engine is still in amazing condition, no loss in power, compression and leak down test are top notch.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by KO: space

Great product

Great oil for your vehicle. Wouldn't use anything else

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by S30: space

Perfect oil to protect your classic car.

After much research needed a top quality oil to protect my 44 year old classic car. Z Rod fits the bill. The best protection out there.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by 454_Burban: space

Best product for my application

I use this oil in my '93 k2500 suburban with the 454tbi motor, It has a mild cam that calls for a zinc additive. I get my used oil lab tested and the tests show that this oil holds up better and provides more protection than the previous high-zinc oil I was using. I now use Amsoil in all of my vehicles and recommend it to friends every time.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Vinny: space

Pretty much the best racing oil out there!

I've been using Amsoil for over 5 years now. This stuff is really incredible! Even with higher oil temps it really does hold up well over a long race. We recently started using this in our endurance car (Acura Integra) and so far it has held up remarkably well!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sam: space

Good Product

Good Product and helpful people at their Las Vegas warehouse

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JDragon: space

Noticed a Difference Then Bought 2 Cases

One of the higher Zinc oils my motor loves. It quieted my lifter tick and my motor just feels more healthy overall. Bought two cases after making sure it was really helping.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by B: space

Amazing stuff

As always amsoil comes through and produces one amazing product! Does everything promises. Great oil for great price. Use amsoil products on all my cars!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by john tran: space

zrod 10w30 will continue to buy for the life of my car!

I use this on my c6 corvette that has a cam and upgraded valvetrain. with this oil my oil pressure is alot more consistent even in the more extreme oil temps. i used to use mobil one synthetic but that stuff is like water compared to this oil at high temps. my motor is protected and i feel alot more confident driving my car hard

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Will: space

Great specs on oil for antique autos

I run AMSOIL oil and gear lube I all my antique autos. Unbeatable protection in my opinion for older, seldom driven vehicles.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Army dude: space

Awesome motor oil

I use this in my 68 gto, fantastic zinc content, holds solid psi even in warmer temps. Won't use anything else.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bayman: space

Good stuff

Seems to keep the engine purring smoothly even after "getting on it" once daily driven now weekend fun car -
2005 Subaru STi
Motor built by Andrew Ashman of OKC
Tuned by him as well.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Self proclaimed Amsoil fanboy: space

Zinc for flat tappet engines

I use this oil in Ford 390 FE engine with flat hydraulic flat tappets, and 235 inline 6 Chevy with flat tappets. The correct amount of zinc is why I use this oil.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lane with the big block camaro: space

The only oil I'll buy from now on

I started running it in my big block camaro and I won't run anything else. The engine runs smoother and it also brought the temps down

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by 1_wikd_v: space

Great product always reccomend it

Inuse it for my tranny and motor oil

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Max: space

Great oil

I think this is the best oil for my '68 Firebird.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tominator: space

A Slick Deal!

Put Amsoil in my 03 Cobra engine and transmission. Noticed a positive difference right away. Engine started faster and idled smoother. My T56 Magnum trans(6 speed) shifted gears more smoothly as well.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by E63 amg: space

I will buy again

Absolutely love the quality of amsoil!! I use only the best on my motors!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bushmaker: space

Most DEFIANTLY BUY AGAIN

Product is GREAT!!! I use in my Yamaha YXZ and can NOT complain about this oil. I have been in the red on my gauges for over half a race and still to this day have not had any motor issues.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sunny D: space

Great oil

Love this oil for my supercharged car with 180k miles.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

Perfect for an older engine

I choose this for my 79 Mustang as it has a non-roller cam and I want to ensure the longest wear and service from the cam and the engine. I trust this oil to meet the needs of my car which are different than modern ones.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rover Guy: space

One of the best products I've found for my engines.

This is a great product for after rebuilding and maintaining my all aluminum block Rover engines. I use it in both my competition trail truck and my daily driver.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

I will buy this product again

I road race a large ci fe ford. It is pushing 4000 miles. The engine has never been freshened and it has never had a failure!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

Don't have anything else

In my 2011 Flush Stage 2 Mustang. Never worry about a thing using Amsoil. I have been using Amsoil in all my vehicles in sliding my 2009 HD Softail Custom

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Superjet: space

Amazing oil

Mix with pump 91 gas for my superjet jet ski. The best oil I've ever used and smells great !

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Steve O: space

Not sure

Little concerned my vehicle never used any oil before using the competitors brand I have used I have used a half quart of Amsoil oil now on the last seven hundred miles

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by M Series Rebuild: space

Great product

We rebuild a lot of vintage flat tappet engines. This product performs as advertised; we have had excellent results for years.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dalt: space

Buy Amsoil!

Great product, delivered super-fast.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Moto Gizmo: space

Great for my performance toys

I use this oil for both my Superformance AC Cobra MK3 and 93 Mustang GT with 347 Ford Performance engine. I feel confident I am getting the best protection money can buy!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Wheelchair Pete: space

Great protection for all my flat tappet vehicles.

Like this stuff as it provides needed ZDDP protection for all of my flat tappet camshaft antiques.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Millz: space

Great product

I run a dirt track car so my oil sees extreme conditions with heat, cycles, and dirt. I use to change my oil after 3 nights out and would then send an oil sample off to get tested and they would come back with the oil is at the end of its life. I then switched over to this amsoil dominator 15-50 mid last year. I sent an oil sample off after 3 races and they told me the oil was practically new still. I then sent a sample off after 6 races and they said the oil its self was still good but recommend I change it because of high silicone (dirt) content in it.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by N/a: space

I use this item all the time

Great protection from racing

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John parrino: space

Drag racer

I think is best stuff out there!!!!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Long time customer: space

Best option for older cars

AmsOil Z-Rod is by far the best oil for older engines that were designed to use motor oil with Zinc. I have used it for many years, and I've never had any issues.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pose: space

Z-Rod

The best oil for my newly rebuilt 1963 Buick 215 Aluminum V8

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

Zrod 20-50

Stays clean and never had a oil related failure

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by regulat guy Mike: space

excellent product

I have used amsoil in my harley and cars as well for a few years now, U still remember the first time I used it in my twin turbo stealth. It ran much smoother and quieter. The same in my harley. This is the best oil in the market, I have tried others before Amsoil but nothing is better.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ike: space

Great oil

I run a stroked 6.1 to a 6.6 Hemi 10.8:1 Compression. I need an oil that takes a pounding driving to work or doing some street racing. Very happy with Amsoil products.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JimP: space

Pleasantly satisfied

I bought this oil primarily for the ZDDP in it. The engine (67' BBC) runs cooler and quieter. I would buy this again, but probably to 20w-50 vibe the 10w-30.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Hoff Motorsports #117: space

Best stuff for my front wheel drive circle track racecar!

I do asphalt circle track racing and Amsoil is all I use! When I'm cranking my car over 9000 rpms it's all I trust!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JLG: space

Reliable, quality product

Using in an 87 Grand National built up with alcohol. Big turbo with 400 trans, run with this oil and have no complaints. Also have been using for years in 1960 Pontiac with 565 bow-tie block over 1350 horsepower with 1071 blower.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chris: space

It's oil!

It lubricates as intended.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bull: space

Yes

Great

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by NFR: space

AWESOME product

Use in our 602 Crate Sportsman Modified

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Fredster1101: space

I TRUST Amsoil products!

have used Amsoil products for last 20 years in cars, trucks, motorcycles and boats.
I have used the top tier Signature Blend several times for the 25K Mile/1 year change interval and have not experienced any problem with wear or failure OR any excessive use during these change intervals.
I see no reason to use any other fully synthetic product in my vehicles, with having the preferred membership prices available, and the cost of anything else is higher for not as good of product!

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by john: space

hot rod oil

I use it in many hot rod cars I work on. good stuff.

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by mustang65: space

best product for antique vehicles

very good product, been using it for years

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Billy G: space

Antique Cars

Antique cars such as my 65 Vette needs oil made under different specs than today's cars. Amsoil ZROD is made from specs the manufacture required when these high compression engines were plus it has zinc

Item Reviewed: Racing Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Odie: space

Great product

I have a 2015 Ram 1500. I have used the product after 5k miles and now have 45k miles. I change the oil every 10k because I am overly cautious. I am very pleased with Amsoil so far. It not scientific but the truck "feels like" it has more pep, and the engine is quieter compared to the factory's filled oil.

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tony Bogus: space

Absolutely

I'm a Ford fanatic and have built and Worked on 302s, both 351s, 4.6 DOHC and 4.6 PI , 4.6 3 Valve, 5.0s 5.8s 4, Valve as well as FE plus 385 series. I was using Royal Purple until it thinned out in my Coyote ! I just spend too much money along with a lot of time, effort and energy to use oil that going to cause me issues and premature failure! Tony Bogus!!!

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bobby: space

American made quality

Americans have been harnessing and producing horsepower since the early 1900's, so who better to provide quality that protects our investments. I love pushing the envelope of power and Amesoil Company has proven themselves to provide oil and other products that keep me enjoying my rides. And still Making America Great!!

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by fastblue7: space

Service

clean longer,better oil pressure,runs cooler.

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by James: space

Worth every penny

Just have my race bike motor rebuilt and i could've used the old bearings they looked immaculate.

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jace: space

Only Amsoil

I bought a 2000 Mustang GT 4.6l with 94,000 miles on it that might not ever have had an oil change. Amsoil brought it back to life and the pony intends to stay with me indefinitely.

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jamie1177: space

Best oil ever!

I run this oil in a 2005 Ran with 35" tires and 6"lift towing a 20' enclosed trailer loaded for racing and actually seen a 2.5 mpg improvement. This engine spends a lot of time above 4K rpm driving up and down mountains.

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jamie: space

Best oil ever!

I run this oil in a 2005 Ran with 35" tires and 6"lift towing a 20' enclosed trailer loaded for racing and actually seen a 2.5 mpg improvement. This engine spends a lot of time above 4K rpm driving up and down mountains.

Item Reviewed: Dominator® Synthetic 5W-20 Racing Oil (RD20)
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