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Subject:Engine Break-In Oil Weight
From:David Kao
Date:Mon, 7 May 2007 09:43:54 -0700

I have just put in a new set of cofap cylinder/piston liner into the engine of my 83 westy.
Could you experts out there advise what oild weight I should put into the engine for breaking
in the new liner? I have searched the archive. But I did not get clear advices there.

My 83 westy only had 110k miles on the engine. It had a pair of cylinder heads (rebuilt)
put in by a VW dealer around 80+k miles. So the heads are in very decent shape still. I did
not touch the block. I assume it is OK at only 110k miles. So I went ahead to replace
only the liner.

I realized that oil weight may be critical for breaking in a new liner after I had poured
into my enige 20-50w oil. I had started up the engine and drove about 5 total miles so far.
I had done 1/2- 3/4 throttle load on 2nd gear to rev up and down for half a dozen times.
I now wonder if I had a wrong weight of oil in the engine trying to break it in.

I hope it's not too late to make a correction now. The friction of the new liner is still
obvoiusly high meaning it still needs to be broken in.

David

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