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#9: 05-21-2011, 03:03 PM
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Originally Posted by broknindarkagain View Post
I've heard (don't have proof though) that a lot of the "synthetic" oils on the market are just conventional oil with additives in them. Wouldn't surprise me if this is the case.
Most of them are synthesized from a combination of Group III and Group IV base stocks, like PP is. As a thread I read on Bob Is the Oil Guy said, though, the base stock matters less than the UOAs. If an oil gets good UOAs, who cares what the base stock is?