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Discussion Starter #1
is 20w-70 too thick for my 85000km 302c that has had an easy life. Would this oil thickness be the cause of the tapping sound?
 

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Yep.

With that few miles, I would even try a 15w-40 and see how it goes. Does it use any oil? Don't use synthetic, waste of money if you do 5,000 k oil drains.

If the 15W-40 is a bit noisy, go up to a 20W-50, and drop it back to a 15W-40 in winter.

Cheers:beer:
 

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Penrite HPR 30 is still a 20w-60. That V8, with 85,000 k's, is only just run-in, and could take a thinner oil.

If it were mine, I would run a petrol rated diesel engine oil 15W-40. Get rid of the tick as well.

cheers
 

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I used to run Penrite HPR 50 (70 Weight) in the Cleveland in my XB when it had very old and loose bearings.
 
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