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Old 09-20-2012, 02:56 PM
machine shop tom machine shop tom is offline
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I have to be picky on the oil I recommend. If a camshaft in an engine I build or machine fails because the oil used is not compatible with flat tappets, I get the grief. I will not stand behind an engine in which somebody has used something other than a dedicated, flat-tappet oil. Some can get away with using this or that, but I can't take that chance.

Before it was generally known that oil producers had reduced the amounts of high-pressure additives (zinc and phosphorus mainly) everybody was blaming camshaft and lifter manufacturers. Those companies really took a hit and replaced many components that failed through no fault of their own. Now that we know the whole story, things fall squarely on the shoulders of who ever is filling the crankcase. It's up to HIM or HER to become educated on this issue.

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