As any serious snowmobiler knows, two-cycle oil is the life-blood of the motor, and a quality oil provides an extra margin of protection when you need it most. In extreme operating conditions, the quality of the oil could very well be the difference between riding home or walking home.
Before the introduction of two-cycle oils, people had to use automotive motor oil in their two-cycle equipment. Many problems arose, and engineers have since recognized the specific performance needs of two-cycle engines. Two-cycle snowmobile engine oil requirements include compatibility with other oils, lubricity to prevent piston scuffing, cleanliness to prevent deposit build-up in the combustion chamber and on the rings, fluidity at cold temperatures and rust protection during off season storage. AMSOIL 2-Cycle Oils meet these requirements.
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Two-cycle engines equipped with oil injection tanks are bound to experience cross contamination when switching from one brand of oil to another. That is why it is important oils are compatible. AMSOIL 2-Cycle Oils have been tested and are compatible with other TCW3 two-cycle oils. Even so, deliberately mixing oils is never a good idea. To minimize cross contamination, AMSOIL recommends that the oil tank be run down to a low level before switching to AMSOIL 2-Cycle Oil.
Lubricity describes an oil’s film strength and its ability to prevent piston scuffing. Heat causes pistons in twocycle engines to expand, making the piston-to-cylinder clearance very small. A two-cycle oil with good lubricity prevents metal-to-metal contact and reduces friction and wear. AMSOIL 2-Cycle Oils have been formulated to improve lubricity. In fact, their chemistries are so robust that 100:1 mix ratios are achievable with AMSOIL 100:1 Pre-Mix 2-Cycle Oil. AMSOIL 2-Cycle Oils easily pass the industry standard ASTM D-4863-00 lubricity test and have years of proven performance in the field.
When oil burns, it leaves deposits on the rings, in the combustion chamber and in the exhaust port. With mineral oils, much of these deposits come from the heavy base oils needed for lubricity. AMSOIL 2-Cycle Oils are formulated with clean burning, lightweight esters instead of heavy mineral base oils, reducing deposits so engines run clean.
The synthetic base oil chemistries making up AMSOIL Series 2000 2-Cycle Racing Oil and 2-Cycle Injector Oil have excellent cold temperature properties, maintaining excellent fluidity and ensuring good pumpability and a constant oil flow. AMSOIL 100:1 Pre-Mix 2-Cycle Oil is designed for pre-mix applications and is not recommended for oil injection systems.
Although many two-cycle oils don’t contain rust inhibitors, AMSOIL 2-Cycle Oils are fully formulated with them. They have been tested and proven to prevent rust from condensation during off season storage.
Originally intended only for water-cooled outboard motors, the most commonly referred to standard for two-cycle oil performance is the National Marine Manufacturers Association TC-W3 standard.
AMSOIL 2-Cycle Oils are recommended for applications requiring TC-W3 oils and in Arctic Cat®, Polaris®, Ski-Doo® and Yamaha® snowmobiles. Although Ski-Doo® does not recognize TC-W3 as a sufficient standard for its two-cycle engines, AMSOIL 2-Cycle Oil significantly outperforms TC-W3 standard oils and is perfectly suited for Ski-Doo® snowmobiles. In fact, the AMSOIL Snocross Team races Ski-Doo® sleds and has a proven track record of great success.
AMSOIL 2-Cycle Oils have consistently demonstrated their superior performance in both racing and trail riding applications and are the product of choice for major snowmobile fleets in Colorado, Idaho, Montana and Wyoming, where the mountains are high and the riding is tough.