Dominator® 5W-20 Racing Oil (RD20)

Amsoil Dominator® 5W-20 Racing Oil (RD20)
Data Bulletin 

Product Highlights

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.

Commercial Availability

Many oil companies produce specialty racing oils for elite groups and do not offer them to the general public. 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, Chad Hord and Brad Lovell are available to everyone.

Package Sizes (RD20)

Code Sizes Units
RD20QT (RD20QT-EA) Quart Each
RD20QT (RD20QT-CA) Quart Case of 12
RD2055 (RD2055-EA) 55-Gallon Drum Each

PRODUCT DESCRIPTION

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. 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.

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.

Anti-Wear Formulation

Racing and high-performance engines are typically modified to deliver maximum horsepower and speed. Their powerful designs create shearing forces that can cause lesser oils to lose viscosity, leaving bearings, pistons and other components vulnerable to wear and failure. 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 (see results below).

Dominator Racing Oil Piston and Cam-Shaft
The piston crown contains normal carbon, while the rings remain clean and functional. Note the absence of wear or scuffing on the piston skirt. The camshaft shows little-to-no scoring, bluing or wear after 3,000 miles of high-performance racing.

Maximum Horsepower

The excessive friction and heat of racing robs engines of power and longevity. DOMINATOR is formulated with a proprietary friction modifier for 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
  • Protection From Startup to the Checkered Flag

DOMINATOR provides maximum protection in temperature extremes. Its low pour point offers excellent cold-start 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.

APPLICATIONS

DOMINATOR 5W-20 Synthetic Racing Oil is recommended for modified small block, asphalt late model, bracket, midget and other domestic and import high-performance racing and street applications that require a 20-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 Ea Racing 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).

TYPICAL TECHNICAL PROPERTIES 0W-40 (RD20)
Amsoil European Car Formula Synthetic Oil
Kinematic Viscosity @ 100°C, cSt (ASTM D445) 9.0
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 50.8
Viscosity Index (ASTM D2270) 158
CCS Viscosity cP (ASTM D5293) 4954 (-30)
Pour Point °C (°F) (ASTM D97) -48 (-54)
Flash Point °C (°F) (ASTM D92) 232 (450)
Fire Point °C (°F) (ASTM D92 246 (475)
Four-Ball Wear Test
(ASTM D4172B@40kg,75°C, 1200rpm, 1hr), Scar, mm
0.39
High-Temperature/High-Shear Viscosity cP (ASTM D5481) 3.1
Total Base Number 8.0

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