Quote:
Originally Posted by Bob KellyIII
.... I pulled the primary chain cover to get to the clutch and discovered that he had 90wt gear oil in it... according to the manual it should be the same engine oil....LOL
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You may want to do some research first. SAE90 gear oil has about the same viscosity as SAE40 to 50 engine oil, and the gear oil is better at protecting gears than engine oil. It also works fine with a motorcycle clutch. A lot of old motorcycles came with engine oil in the gearbox, but the current recommendation for them is to use SAE90 gear oil. I have it in my '72 Kaw H2's transmission.
Just make sure you don't use the gear oil made for limited slip differentials because it has friction modifiers you don't need or want in a clutch.