Quote:
Originally posted by maroon menace
The funny thing is every one said don't drain the old fluid. they claim it is full of disk fiber and junk that helps the worn transmission. I thought that was a bit odd.
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The reason people say that is because atf is a detergent. On older transmissions, the seals and gaskets start to get brittle, and replacing the fluid without changing the gaskets an cause leaks. From what I know, that's the reason that people say to leave the old fluid in. If anyone knows more about this than I do, please correct me where i'm a little vague or wrong