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Discussion Starter #1
I have a issue, when my bike is cold I know the oil is thick and the engine is running quiet. When the oil heats up it gets thinner and the engine valves start tapping.

I know it not in need of a valve adjustment because I just did it.
 

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Run 10W-40W Brand what ever is cheap at AutoZone.
 

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second chimp in space
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3,344 Posts
I ran 10w-40 in mine and it was ok.
 

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Discussion Starter #4
is 10w-40 thicker than 10w-50, I know I would need an heavier oil.
 

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Discussion Starter #6
thanks, going change the oil tonight, it about time for a change anyway.
 

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~ Master Technician ~
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2,176 Posts
I always ran 20W-50 in my '89 ZX750 and it never had any problems.
 
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