well thats strange what brand oil are you using
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well thats strange what brand oil are you using
Penrite
mmmm i have always used motul in my bikes but i have never heard any bad rep about penrite either .....oh well at least you got it sorted mate
Which number do i need to lower, the ten or fifty
well i use 10w40 in my bikes mate
I have successfully used Motul 5100 10W-50 in my race engine for years. Never had a reason to suspect it was responsible for clutch drag. We are living in Australia and not the south pole so the heavier oil should not be an issue for you.
More reently I have been running Penrite Racing 10w - 40. Clutch slip is usually the complaint when usihg oils with lots of anti-friction additives (car oils).