The Original Synthetic Oil
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DOMINATOR™ Synthetic 2-Cycle Racing Oil (TDR)
DOMINATOR, an AMSOIL exclusive formulation, lubricates and
protects high performance two-cycle motors, both on and off the
track. High performance motors, particularly those that are modified,
operate hotter and at higher RPMs than recreational motors, and
they need good oil for peak performance. DOMINATOR is
engineered for racing. It has the right film strength and clean burning
properties for “on the edge” operation. JASO FC, API TC
* 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.
Package sizes include:
1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
16-Gallon Keg
30-Gallon Drum
55-Gallon Drum

- Provides excellent film strength for high heat, high RPM motors
- Reduces friction for maximum power
- Recommended for use with coated or non-coated racing pistons
- Recommended for use with exhaust power valves
- Recommended for use with high octane racing gas
- Burns clean; Prevents ring sticking and plug fouling
- Provides excellent protection at 50:1 pre-mix or in injection system
See Article: Two-Cycle Engine Applications and Lubrication Needs
Super Film Strength
High performance two-cycle motors have high compression ratios, which significantly increase
combustion chamber heat and crankshaft bearing pressures. Hot combustion processes quickly burn
off and evaporate light oils and cause rapid piston expansion, decreasing piston-to-cylinder wall
clearances. This promotes piston scuffing and possible seizure. And increased pressure on
crankshaft bearings promotes metal-to-metal contact, wear and pitting.
High heat and pressures require tough oil with better film strength and more lubricity. DOMINATOR,
constructed with AMSOIL heavy synthetic oil, handles high heat better than mineral oils and provides
improved film strength and lubricity. DOMINATOR reduces friction and provides an extra measure of
protection against piston scuffing and crankshaft bearing wear.
Clean Burning
High combustion processes require the proper additives and oils to control deposits. DOMINATOR
contains strong, high temperature detergent additives and highly pure AMSOIL synthetic oil. It
prevents deposits that cause ring sticking, plug fouling and exhaust port blocking. DOMINATOR is an
optimized product for severe service.
Applications (2-Cycle Recommendations Chart)
DOMINATOR is recommended for use in high performance stock or modified two-cycle motors,
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-cycle oils, however, mixing oils should be
minimized.
Use at 50:1 pre-mix ratios (2.6 oz. oil per U.S. gallon of gas) or as injection oil where JASO FC or API
TC oils are specified. 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.
TYPICAL TECHNICAL PROPERTIES - Revised as of 6/08
hp Injector Synthetic 2-Cycle Oil
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Kinematic Viscosity @ 100°C, cSt (ASTM D445)
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8.0
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Kinematic Viscosity @ 40°C, cSt (ASTM D445)
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40.9
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Viscosity Index (ASTM D2270)
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174
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Pour Point °C (°F) (ASTM D92)
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-50 (-58)
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Flash Point °C (°F) (ASTM D92)
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84 (183)
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Fire Point °C (°F) (ASTM D92)
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84 (183)
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ASTM Brookfield Viscosity @ -40°C (°F)
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12800 cP
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SAE Fluidity/Miscibility
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#4
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vomiting. Contact a physician immediately. Keep away from fire, heat and open flame. Use with adequate ventilation. Avoid OF
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AMSOIL Dominator Synthetic 2-Cycle Racing Oil (TDR)
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