DOT 3 or DOT 4

Tiny
BECKO
  • MEMBER
  • 1996 SUBARU JUSTY
  • 4 CYL
  • AWD
  • MANUAL
Can I replace the old break fluid with new DOT 4 fluid although the cap of the break fluid tank says USE DOT 3 ONLY? Will I have problems?
Tuesday, June 28th, 2011 AT 10:47 AM

6 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go ahead and replace it with the DOT4
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Tuesday, June 28th, 2011 AT 11:16 AM
Tiny
BECKO
  • MEMBER
  • 4 POSTS
So I won't have any problems with my break system or leaks from the break system?
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Tuesday, June 28th, 2011 AT 12:20 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its just an upgrade from DOT3-you shouldn't have no problem if in doubt don't replace it-read its compatibility before you do it-
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Tuesday, June 28th, 2011 AT 12:46 PM
Tiny
BECKO
  • MEMBER
  • 4 POSTS
I found a german brake fluid DOT 4 I.G.A.T and it's says that cover DOT 3 and have better fisical indicators
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Tuesday, June 28th, 2011 AT 12:51 PM
Tiny
BECKO
  • MEMBER
  • 4 POSTS
So thank you for the answer
wish you the best ;)
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Tuesday, June 28th, 2011 AT 12:57 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
As long as you don't use DOT 5 which is silicon based and foams in abs systems you're ok.
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Friday, July 1st, 2011 AT 8:34 AM

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