Recent content by rocksalt

I have had similar results with different oils. Nothing wrong with clutches. Rotella-T 15-40 seems to work well. The problem is.. why is it so cheap? 12.00 at wallyworld for a gallon. I have heard mention it's fake synthetic. Why is that? Heavy weight oil will also make shifting harder.

If it's not the moly in the "API" certified car oils, then what causes the clutches to slip on motorcycles? I have tried many oils on my bikes and when using cork based clutches I notice clutch slip to the point of failure. All the oils with the API certified label seems to have this effect...