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.

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.
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).
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 715-392-7101 or via the
Internet at www.amsoil.com. Keep Out of
Reach of Children. Don’t pollute. Return
used oil to collection centers.
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TYPICAL
TECHNICAL
PROPERTIES
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Dominator® Synthetic
5W-20 Racing Oil
(RD20)
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Kinematic
Viscosity @ 100°C, cSt
(ASTM D-445)
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9.0
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Kinematic
Viscosity @ 40°C, cSt
(ASTM D-445)
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49.6
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Viscosity
Index (ASTM D-2270)
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165
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CCS
Viscosity (°C), cP (ASTM
D-5293)
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5695
(-30)
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Pour Point
°C (°F) (ASTM D-97)
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-45
(-49)
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Flash Point
°C (°F) (ASTM D-92)
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225
(437)
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Fire Point
°C (°F) (ASTM D-92)
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241
(466)
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Four Ball
Wear Test
(ASTM D-4172B: 40 kgf,
150°C, 1800 rpm, 1 hr),
Scar, mm
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0.49
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Noack Volatility, %
weight loss (g/100g)
(ASTM D-5800)
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8.0
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Shear
Stability Kurt Orbahn
(ASTM D-6278),
% viscosity change 90
cycles.
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<3.0
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High-Temperature/High-Shear
Viscosity,
150ºC, 1.4x106s-1, cP (ASTM
D-5481)
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3.0
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