Dominator® Synthetic 15W-50 Racing Oil (RD50)
 Dominator® Synthetic 15W-50 Racing Oil (RD50)

AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 15W-50 Racing Oil delivers superior performance and maximum protection in extreme conditions.

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
55-Gallon Drum

Product Code: RD50 • Brand: AMSOIL




MSDS Data Sheet

Product Details Tech Data Reviews & Rating

Product Applications
AMSOIL Dominator Synthetic 15W-50 Racing Oil is recommended for high-rpm, high-horsepower, turbo/supercharged, gasoline- or alcohol-burning, nitro-fueled or nitrous oxide gas-injected applications operated under severe conditions.

Product Application Specs

Applications include, but are not limited to, the following:
• Asphalt Late Model • Dirt Late Model • Modified Big Block • Ford Crate Late Model • Dodge Crate Late Model • Endurance • Rally • Sprint • Truck-Pull • Aluminum Block • Marine • Other high-performance racing and street applications requiring 50-weight oil.

AMSOIL Ea Racing Air Filters (EaAR) are specially designed for racing and street rod enthusiasts who desire AMSOIL Ea protection in carbureted applications. AMSOIL EaAR Air Filters are constructed with the same synthetic nanofiber media as other AMSOIL Ea Air Filters, providing maximum protection and extended filter life.

AMSOIL offers WIX Racing Oil Filters for racing applications. WIX racing filters are specially designed for racing applications only.

OIL ANALYZERS INC., 715-395-0222, is a division of AMSOIL that provides cost-effective, quality oil analysis services. For more information on product applications and service life, refer to the AMSOIL Product Recommendation and Drain Interval Guide (G1490).

Product Description
AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 15W-50 Racing Oil delivers superior performance and maximum protection in extreme conditions. Its shear-stable formulation was engineered to provide maximum horsepower without sacrificing engine protection. Dominator Synthetic 15W-50 Racing Oil provides straight-grade protection in a multi-grade formulation.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine.

MAXIMUM DURABILITY, MAXIMUM WEAR PROTECTION
AMSOIL Dominator Synthetic Racing Oil features an additive package heavily fortified with zinc and phosphorus for superior long-term wear protection. Designed for maximum durability, it ensures critical engine components are protected for the duration of the race. Dominator Synthetic Racing Oil’s superior additive technology provides unmatched durability in extreme conditions. In addition, its high levels of zinc and phosphorus additives make it ideal for street rods, muscle cars and other vehicles with flat-tappet cams.

Four Ball Wear Test

SUPERIOR PERFORMANCE
Dominator Synthetic Racing Oil’s proprietary friction modifier provides reduced friction for maximum power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.

PROTECTION FROM STARTUP TO THE CHECKERED FLAG
Dominator Synthetic 15W-50 Racing Oil’s multi-viscosity design provides maximum protection in temperature extremes. Dominator Racing Oil offers excellent coldstart protection and provides less drag when engine oil has not reached stable operating temperatures. It maintains superior film strength during high-temperature operation on the track.

SUPERIOR-QUALITY OILS, NO DISCRIMINATION
Many oil companies produce specialty racing oils for elite groups and do not offer them to the general public. For instance, several popular oil manufacturers produce racing oils offered only to NASCAR racers. All AMSOIL synthetic motor oils are already formulated to a higher level of performance than competitors’ oils, and AMSOIL Dominator Synthetic Racing Oil is no exception. It provides maximum performance and superior protection to all racers, regardless of their level of competition. The same AMSOIL Dominator Synthetic Racing Oil that is used in the engines of AMSOIL corporately-sponsored racers, including Scott Douglas and Brady Smith, are available to everyone.

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 RD50.

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

TYPICAL TECHNICAL PROPERTIES
Dominator® Synthetic 15W-50 Racing Oil (RD50)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 17.5
Kinematic Viscosity @ 40°C, cSt (ASTM D-445) 119.6
Viscosity Index (ASTM D-2270) 162
CCS Viscosity (°C), cP (ASTM D-5293) 6695 (-20)
Pour Point °C (°F) (ASTM D-97) -36 (-33)
Flash Point °C (°F) (ASTM D-92) 234 (453)
Fire Point °C (°F) (ASTM D-92) 248 (478)
Four Ball Wear Test
(ASTM D-4172: 60 kgf, 150°C, 1800 rpm, 1 hr), Scar, mm
0.47
Noack Volatility, % weight loss (g/100g) (ASTM D-5800) 8.0
Shear Stability Kurt Orbahn (ASTM D-6278),
% viscosity change 90 cycles.
6.3
High-Temperature/High-Shear Viscosity,
150ºC, 1.4x106s-1, cP (ASTM D-5481)
5.4

Did this product meet your expectations?

(click on a star to rate)
Product Name: Dominator® Synthetic 15W-50 Racing Oil (RD50)
Current Rating: 4.86 out of 5 stars
Total Votes: 28 vote(s)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Repeat customer

I use this in my LS buggy.

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 Sportsman69: space

Best product on the market

I use amsoil to n all my vehicles from track cars to my every day driver even my motorcycle and never been happier thank amsoil for your a-1 products

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 CE Racing: space

Best racing oil on the market

Engine builder has told me that our oil program is one of the best he has seen.

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 Matt Carter: space

I would recommend this oil to anyone!

Highly recommended for racing. My bearings after 16 races looked brand new. I wouldn't run anything different.

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 Mason: space

Best product for the money

Run it in my race engines and I do not see the wear with this product as with other brands

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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

Only oil I use

Have use AMSOIL products for many years in all my vehicles. New 2015 Ford Escape ,serviced by ford using their oil burning a little.

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 extreme speed and marine: space

thats all i run in my ilmor viper v10 engine use only amzoil

my race motor loves it

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

Reviewed by Sam : space

Great oil for extreme drivings!!!!

Awesome oil,using it in my track car (turbocharged engine) that engine runs smoothly and oil temps at track conditions are some higher then regular/ street driving!

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)
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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 Bart: space

2nd purchase if this product

use in my 2011 streetglide less valve train noise runs cooler

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 Sizzler: space

Works great

Does it's job as long as the owner keeps oil in the motor!

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 Vega: space

Dominator Series

Awesome lubricant for your racing !

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 RONALD: space

From MD to Florida Racing 2015 Z28

Racing in my blood , temps rise and fall, but guaranteed protection is no doubt when I roll with amsoil... My pressure and temps are steady and my boost gauges don't lie... Thanks Amsoil!!!

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)

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 Joshua: space

Gains

Gained hp with this over the shell synthetic oil I was using.

Item Reviewed: Dominator® Synthetic 15W-50 Racing Oil (RD50)
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