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AMSOIL Dominator Racing Series 15W-50

Amsoil's heavy hitter - 15W50 Racing Synthetic - The best ever for the track!

Innovation built on almost 40 years of serving top racing teams - Experiene the latest in Competition Race Oils

Al, Give them the actual oil you made us for the races - Bobby Unser

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

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Printable Product Data Sheet for AMSOIL's Dominator Race 15W50 Synthetic Engine Formula.

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Overview & 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.

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.

One of these companies actually contacted AMSOIL asking if AMSOIL would make their oil!

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.

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.

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.

Scott Douglas works directly with AMSOIL tweaking the 15W50 racing formula. He says it saves the engine everytime right when it should fail!

I had the chance to talk to Scott Douglas regarding the last couple minutes of a race how he always pegs out the lead - He said the engines at that point are all about to quit but the Dominator amazingly lets him keep the throttle down while others have to back off as all these engines are mechanically unstable from all the shock.
Scott says they typically wont drive 10 feet after a race, that's how close to the end they take the engines and Dominator has the technology to get Scott to the finish line.

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.

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).

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). An MSDS is available upon request at 715-392-7101 or via the Internet at Keep Out of 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) 184
CCS Viscosity, cP @ (-39°C) ASTM D-5293 6139
Flash Point °C (°F) (ASTM D-92) 226 (439)
Pour Point °C (°F) (ASTM D-97) -51 (-60)
Noack Volatility, % weight loss (g/100g) (ASTM D-5800) 7.3%
Four Ball Wear Test
(ASTM D-4172B: 40 kg, 75°C, 1200 rpm, 1 hour), Scar, mm
Total Base Number 10.5


Our Severe Gear differential products fit perectly with the Dominator Racing Serious of oils.

AMSOIL Severe Gear Products





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