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AMSOIL Dominator® Synthetic 5W-20 Racing Oil (RD20) provides superior performance and
maximum protection in high-performance and racing applications. Formulated to withstand the
Synthetic 5W-20 Racing Oil delivers superior performance and maximum protection in extreme
conditions.
PRODUCT DESCRIPTION
AMSOIL Dominator® Synthetic 5W-20 Racing
Oil (RD20) 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 5W-20 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 5W-20
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 5W-20 Racing
Oil’s superior additive technology provides
unmatched durability in extreme conditions. In
addition, its light viscosity makes it ideal for
high-performance tuner cars and sub-compact
vehicles.
Dominator® Synthetic 5W-20 Racing Oil (RD20)
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 5W-20 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.

APPLICATIONS
AMSOIL Dominator Synthetic 5W-20 Racing Oil is recommended for high-rpm, high-horsepower,
turbo/supercharged, gasoline- or alcohol-burning and nitrous oxide gas-injected applications operated
under severe conditions.

Applications include, but are not limited to, the following:
• Modified Small Block • Asphalt Late Model • GM Crate Late Model • NHRA Stock Eliminator • Bracket •
Midget • Kart • Junior Dragster • Other domestic and import high-performance racing and street
applications requiring 20-weight oil. The low-viscosity formulation and robust additive package of
Dominator 5W-20 make it ideal for use as a high-strength qualifying 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.

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). An MSDS is available
upon request at 763.257.3130 or via the Internet at www.amsoil.com. Keep Out of Reach of Children.
Don’t pollute. Return used oil to collection centers.
TYPICAL PHYSICAL PROPERTIES

Dominator® Synthetic 5W-20 Racing Oil (RD20)
Kinematic Viscosity @ 100°C, cSt (ASTM D445)
9.0
Kinematic Viscosity @ 40°C, cSt (ASTM D445)
49.6
Viscosity Index (ASTM D2270)
165
Cold Crank Simulator Apparent Viscosity @ -35°C, cP (ASTM D5293)
5695 (-30)
Pour Point °C (°F) (ASTM D92)
-45 (-49)
Flash Point °C (°F) (ASTM D92)
225 (437)
Fire Point °C (°F) (ASTM D92)
241 (466)
Four-Ball Wear Test (ASTM D4172: 40kgf, 150°C, 1800 rpm, 1 hr) Scar diameter,
mm
0.49
Noack Volatility (ASTM D5800) 250°C for 1 hour, % weight loss
8.0
High Temperature/High Shear Viscosity cP, X°C, X s-1 (ASTM D4683)
3.0
Shear Stability Kurt Orbahn (ASTM D-6278),
% viscosity change 90 cycles.
<3.0
1-Quart Bottles (case of 12)
55-Gallon Drum
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