I recently had our warriors serviced by our local yamaha dealer. They of course fill the quads with their yamalube stuff.

The guy there recommended to buy Rotella T heavy duty motor oil (15w-40) in place of buying atv oil. On the back of this container, it shows pictures of big stuff like trucks, tractors, etc... Is this stuff good to use in our warriors in place of atv engine oil?

Also, since there already is some yamalube oil in the engine, is it ok to add some different kind of oil and basically (mix) the two?

Thanks


If this oil is no good, could you suggest a better oil?