 Dot4 in our car. |
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 Jan 25, 2012 - 10:20 PM
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 Enthusiast  Joined Dec 9, '08 From Blainville Currently Offline Reputation: 4 (100%)  |
Has anyone tried Dot4 brake fluid in our car? I heard it was compatible, but is it worth it? Did you notice a difference?
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Jan 25, 2012 - 11:07 PM
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 Enthusiast Joined Feb 24, '07 From Oahu, Hawaii Currently Offline Reputation: 23 (100%) |
you cant mix dot3 and 4 so you'll have to drain the system. refill with dot4 and remove air bubbles. I dont see why you'd need a higher grade of brake fluid. Most cars will never exceed dot3 boil temps unless racecar
-------------------- I don't normally drive fast, but when I do its on a curvy section of this island
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Jan 26, 2012 - 12:51 AM
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Enthusiast Joined Dec 9, '08 From Blainville Currently Offline Reputation: 4 (100%) |
QUOTE (808celica @ Jan 26, 2012 - 12:07 AM)  you cant mix dot3 and 4 so you'll have to drain the system. refill with dot4 and remove air bubbles. I dont see why you'd need a higher grade of brake fluid. Most cars will never exceed dot3 boil temps unless racecar When I said compatible, I meant system compatible not mixable. And I wanted to know cause I might want to get it on the track a little. |
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Jan 26, 2012 - 1:21 PM
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Enthusiast Joined Jul 29, '11 From chino, Ca Currently Offline Reputation: 4 (100%) |
yeah it should be compatible dot 3&4 aren't to different in a way just boiling temps are different, if you want to do it the right way you will have to run denatured alcohol through your brake lines then run the dot 4 in after that it takes a long time and its very tedious the hard part is getting all of the bubbles out
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Jan 27, 2012 - 3:38 PM
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Enthusiast Joined Dec 30, '11 From Atlanta via Mobile Currently Offline Reputation: 0 (0%) |
DOT 5 is the stuff you don't wanna mix.
Car Talk - Brake Fluid -------------------- QUOTE (Araykhel @ Oct 10, 2011 - 6:32 PM) Today I learned that I need a turbo to complete me. |
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Jan 27, 2012 - 6:59 PM
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 Enthusiast Joined Aug 15, '10 From The Best Coast Currently Offline Reputation: 12 (100%) |
You wont notice a difference between dot 3 and 4 in our cars, in any situation.
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Jan 27, 2012 - 8:01 PM
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 Enthusiast Joined Apr 23, '08 From Muskego,Wi Currently Offline Reputation: 8 (100%) |
i dont even see how it could in anyway make a difference unless your boiling your brake fluid which i doubt
-------------------- 2nd Gen 3s-gte.... It lives!
97celiman "92-gt-quit making up random acronyms that dont mean anything. the only real acronym is JDM" |
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Jan 28, 2012 - 5:19 AM
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 Enthusiast Joined Aug 25, '08 From England Currently Offline Reputation: 1 (100%) |
You can mix DOT 3, DOT 4 & DOT 5.1, if you have DOT 3 in your system its fine to top it up with DOT4 or DOT 5.1 as they are all polyethylene Glycol based fluids, DOT 5 is silicon based and should not be mixed ever.
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