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Re: 3000 Mile Changes Are Old School Posted by Justin VanAbrahams [Email] (#32) [Profile/Gallery] (more from Justin VanAbrahams) on Wed, 9 Nov 2005 00:21:51 In Reply to: Re: 3000 Mile Changes Are Old School, jeff t, Tue, 8 Nov 2005 08:26:36 Members do not see ads below this line. - Help Keep This Site Online - Signup |
It's not that synthetic oil "eats" seals, it's that dinosaur oil swells seals. In the early days, synthetic oil didn't have the same effect on rubber, so old swollen seals would contract and cause leaks. Newer synthetic oils ("newer" meaning for the last decade or more) have additives that cause them to swell seals just like dinosaur oil...
There *is* a chance that the more uniform molecules in synthetic oil may seep past seals that dinosaur oil won't or didn't seep past as fast, but this is pretty bloody unlikely.
Bottom line: Any synthetic oil you buy today will not result in leaks that weren't already there.
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