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BCbear
New User
Sep 16, 2006, 10:09 PM
Post #1 of 2
(1533 views)
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Brake Fluid Question
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I have just replaced one of my rear brake calipers on my '93 VW Golf CL. Before I started on the second wheel I seen in the repair book that the Golf uses DOT4 brake fluid and I used DOT3 fluid (used on my Corolla) to top up and bleed my system after the one caliper replacement.
How worried should I be about this? The repair book states if a wrong fluid is used one needs to bleed the whole system with the correct fluid and replace all the seals. Does this DOT 3/4 mix up warrant such a big move? Thanks
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Sep 16, 2006, 10:57 PM
Post #2 of 2
(1530 views)
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Re: Brake Fluid Question
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Arggh!!
DOT 3 is a standard for its hydroscopic nature and boiling point. I can't look or find right now what DOT 4 means other than I think it's about the same but a higher boiling point. Check the label. Brake fluid MUST be rubber friendly and that's the most important right now.
I would get it all out and won't venture a suggestion about replacing all rubber parts, T
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