Quote:
Originally Posted by Ram Jet
Rotella oil seems pretty popular here. Isn't it oil for heavy duty use in diesel engines? I'm using Mobil Racing 4T 10w-40 synthetic motorcycle oil. I use anything Mobil makes. Mobil claims it's also wet clutch friendly.
Just F.Y.I.
Bill
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It is.
Rotella (and other diesel oils) have the higher level of additives (Zinc and Phosphorus - ZDDP) that have been removed from current auto oils. It's a lower level (Group III) synthetic and doesn't contain additives that may cause clutch issues. It's good quality and readily available for a reasonable price. T6 has been certified JASO-MA for use with wet clutches.
The Mobil1 4T oil you are using is a step up, and is designed for cycle use. All "cycle-specific" oils are designed to be used with wet clutches. A good choice, though a bit more expensive.