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Old 05-11-2006, 06:44 AM
grahambw
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Sounds good....I'm hoping the Synthetic will keep engine free of varnish, etc....What are the diff. manuf. techniques ( if any) that allow Porsche, Corvette, BMW, etc. to run full Synthetic from the factory and others conventinal oil?....If its just the cost, I will go with synthetic
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