Date: Tue, 28 Aug 2007 11:04:20 +1200
From: Richard Sutherland-Smith <>
Subject: Re: Wrong fluid - help!

> Talisker wrote: >> I just topped off my brake fluid with transmission fluid. Bad idea, I >> was not paying attention. >> >> I suctioned out what I could and then filled it with brake fluid - DOT3. >> Then I realized it should be DOT4. Suctioned that out too. >> >> I haven't started the car so figure there has been no circulation yet. >> How much damage did I do? Should I have the car taken in for some work >> before I run it? >> >> It's a 98 Saab 93, my daugher's car. >> >> Gary > AS others have said, it is unlikely the ATF has migrated into the > system, but best to flush the brake lines. > By the way, there is minimal dfference between DOT3 and DOT4 brake > fluid. They are both glycol based fluids and can be mixed in a pinch. > The only real contamination would be having the ATF fluid in there. > DOT5 is where the fluid changes completely to a silicon base and is not > compatable with the earlier spec fluids. And no, you do not want to use > DOT5 fluid. But 5.1 is OK and mixes! Pity they couldn't find a better designation for it. -- Richard Sutherland-Smith 19 Webb Road, Wanganui 4500, NZ

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