This premium synthetic 4-stroke snowmobile engine oil is a special ester based formulation which provides excellent protection against engine wear and friction. This starter clutch compatible snowmobile engine oil has superior cold weather starting and easy start up lubrication in the coldest temperatures. Recommend in engines and transmissions which specifying 0W-40, 5W-30, 10W-30 or 10W-40 viscosity grade. Particularly suitable for use in 4-stroke snowmobile engines of Arctic Cat, Lynx, Polaris, Ski-doo and Yamaha.Recommend in engines and transmissions which specifying 0W-40, 5W-30, 10W-30 or 10W-40 viscosity grade. Particularly suitable for use in 4-stroke snowmobile engines of Arctic Cat, Lynx, Polaris, Ski-doo and Yamaha.