01-05-2011, 07:29 AM
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CC Member
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Join Date: Jul 2005
Location: Bartlett,
Ill
Cobra Make, Engine: Everett-Morrison LS1
Posts: 2,448
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Not Ranked
I think that back in the late 50s early 60s that Shell and Texaco straight wt non detergant oils leaked less--the multi grades leaked so bad out of the GM Corvair aircooled engines that they started telling everybody to use Shell/Texaco.
The new modern syn oils of 0-x wts will be pretty much impossible to be 100% leakproof in a oil system that isn't a full vacume assisted crankcase |
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