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Old 11-09-2012, 11:03 PM   #22
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Joined: Nov 2005
Location: the west
Oddometer: 1,964
Two suspected causes of cam follower damage are valve lash too tight and lubrication failure. By the looks of those heavy varnish deposits there was overheating and/or extended oil change interval. The engine calls for API SF/SG. Newer automotive oils are SL/SM with low levels of ZDP.
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