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#14: 05-14-2007, 11:40 AM
Title: Too Big to Fail
Rank: Donating Member
Location: Naperville, IL
Car: 05 Legacy GT/15 Chevy SS Sedan
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Originally Posted by G.T.Subie View Post
Hey I was asking a serious question.
Just trying to educate myself.
I apologize; I got 2 messages mixed up.

There is a school of thought that you can't change back once you use synthetic oil, there is another school of thought that it doesn't matter. There is some merit to the idea that you shouldn't change to synthetic on a motor that has a lot of miles on it (like over 85k) because it might cause leaks due to changes in the seals. The key is to use oil that is properly rated and to change it at the right intervals, don't get hung up on the brand.