Quote:
Originally Posted by liar
the biggest issue to watch out for with the oil is that the clutch is in the oil so if the oil used has too much friction modifiers in it , it can slip . the best policy is always use the oem manufacture recommendations . trying to save a few bucks by using off the shelf engine oil "may" end up causing more grief than its worth .
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When I got the old Yamaha I figured I'd give it a treat and put in synthetic oil. Not good. Clutches slipping. Washed it out and went back to Yamalube. Later a parts man told me Valvoline motorcycle oil was good for clutches. Nope. Some slippage there too. Back to the old fashioned non slippery Yamalube for $10 a litre. Not really complaining, the old machine is a 1986 and running quite well! LOL