Amsoil Dominator

DOMINATOR® Synthetic 2-Stroke Racing Oil

Amsoil Dominator

Amsoil Dominator

 Racers can’t win what they don’t finish. That’s why AMSOIL formulators built DOMINATOR® 2-Stroke Racing Oil. This complex blend of oils and additives directly addresses the heat, pressure and friction of race-engineered engines. These engines operate on the edge, yet engine reliability is critical. DOMINATOR does an outstanding job protecting high-performance engines. It adds durability that professional racing teams depend on and delivers confidence so engines can be pushed to the limit.

Product Code: TDRQT-EA
Package sizes include:
  • Quart Bottle
  • 1-Gallon Bottle
  • 16-Gallon Keg
  • 30-Gallon Drum
  • 55-Gallon Drum

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Race-Proven Benefits

  • Excellent film strength for high heat, high-rpm motors
  • Anti-friction formula for maximum power
  • Burns clean; helps prevent ring sticking and plug fouling
  • Protects coated and non-coated racing pistons

See Article:
Two-Cycle Engine Applications and Lubrication Needs



Excellent Lubricity and Film Strength

High-performance and race-designed two-stroke engines operate under severe
conditions. They are modified for higher compression ratios, higher rpm and
leaner combustion, all of which increase heat and pressure. High heat can
quickly burn off light oils and cause rapid piston expansion, decreasing
piston-to-cylinder wall clearances and increasing the likelihood of piston
scuffing and seizure. High pressure can exceed the film strength of
low-viscosity oils, which promotes crankshaft bearing wear and pitting.

DOMINATOR is purpose-built for outstanding film strength and lubricity. It
is engineered with carefully selected, higher-viscosity synthetic base oils to
withstand the high heat and pressure common to high-performance and racing
applications. DOMINATOR’s anti-friction chemistry is race-proven to provide an
extra measure of protection against piston scuffing and bearing wear. See
teardown photos below.

Outstanding Cleanliness

The oil and fuel burned in the two-cycle combustion process leave destructive
deposits on the pistons, rings and in the combustion chamber. Excessive
deposits can lead to catastrophic engine problems, including ring sticking,
exhaust port blocking and pre-ignition.

AMSOIL DOMINATOR is formulated with clean-burning synthetic base oils and
powerful high-temperature detergent additives for exceptional deposit control.
It helps prevent the power-robbing carbon deposits that cause ring sticking,
exhaust port blocking and pre-ignition. AMSOIL DOMINATOR is optimized for
severe service.


AMSOIL disassembled the Rotax® motor from Scheuring Speed Sports’ Ski-Doo®
race snowmobile ridden by Robbie Malinoski during the 2010/2011 professional
snocross tour. Both pistons revealed minimal wear and were suitable for
continued use. AMSOIL DOMINATOR delivered outstanding protection for
Malinoski’s Ski-Doo in the most severe environment.



DOMINATOR® is recommended for use in high-performance stock or modified
two-cycle engines, including air- or liquid cooled snowmobiles, personal
watercraft, motorcycles (moto X), ATVs, go-carts and outboard motors*. Good
for use with coated or non-coated pistons, high-octane racing fuels and
exhaust power valves. Compatible with most other two-stroke oils; however,
mixing oils should be minimized.

Use in oil-injected and pre-mix applications where API TC oils are
specified. In pre-mix applications, DOMINATOR delivers outstanding protection
at 50:1 (2.6 oz. oil per U.S. gallon of gas), although many racers modify the
mix ratio to suit their setup. Not suitable for use with alcohol or
nitro-methane fuels.

* Not suitable for long-term use in outboard motors as a TC-W3-type oil,
although excellent as a race oil for short-term use where motors are
periodically inspected.


This product is not expected to cause health concerns when used for the
intended application and according to the recommendations in the
Safety Data Sheet (MSDS)
. An MSDS is available . Keep Out of Reach of Children. Don’t
pollute. Return used oil to collection centers.

For warranty information, visit

Kinematic Viscosity @ 100°C, cSt (ASTM D445)
Kinematic Viscosity @ 40°C, cSt (ASTM D445)
Viscosity Index (ASTM D2270)
Pour Point °C (°F) (ASTM D97)
-51 (-60)
Flash Point °C (°F) (ASTM D92)
102 (215.6)
Fire Point °C (°F) (ASTM D92)
102 (215.6)
TDR Packaging Information
Code Package Size Unit of Measure Product
TDRQT (TDRQT-EA) Quart Each DOMINATOR Synthetic 2-Cycle Oil: (1) quart bottle
TDRQT (TDRQT-CA) Quart Case of 12 DOMINATOR Synthetic 2-Cycle Oil: Case of (12) quart bottles
TDR1G (TDR1G-EA) Gallon Each DOMINATOR Synthetic 2-Cycle Oil: (1) gallon bottle
TDR1G (TDR1G-CA) Gallon Case of 4 DOMINATOR Synthetic 2-Cycle Oil: (4) gallon bottles
TDR16 (TDR16-EA) 16-Gallon Keg Each DOMINATOR Synthetic 2-Cycle Oil: 16-gallon keg
TDR30 (TDR30-EA) 30-Gallon Drum Each DOMINATOR Synthetic 2-Cycle Oil: 30-gallon drum
TDR55 (TDR55-EA) 55-Gallon Drum Each DOMINATOR Synthetic 2-Cycle Oil: 55-gallon drum


Amsoil pricing on reqular packages and bulk 55 gallon drums

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