- 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
Racing Testimonial: AMSOIL snowmobile oil saves engine
During the Pro Open final at the opening rounds of AMSOIL Championship Snocross, professional rider Lincoln Lemieux's Ski-Doo lost all its engine coolant after a hose clamp broke. Despite intense heat that melted the exhaust power valve covers, O-rings and gaskets, AMSOIL DOMINATOR Synthetic 2-Stroke Racing Oil protected Lemieux's engine so well, the team is able to reuse the engine after replacing the melted parts.
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.
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.
RACING IS RESEARCH™
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 liquidcooled
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.
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 via the Internet at www.amsoil.com
or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute.
Return used oil to collection centers.
For warranty information, visit www.amsoil.com/warranty.aspx.
For detailed typical technical properties, download the product data bulletin.