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Brake fluid ok to talk in here?

Old 04-24-2015, 07:59 PM
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Brake fluid ok to talk in here?

So I noticed my 5th gen cap says only use dot 3
From my understanding dot 4 is backwards compatible with dot 3
the only difference being it has better stuff in to last longer and not overheat ect.



My question is why did Nissan say dot 3 ONLY.
The fluid is freaking black btw so I want to change it. I don't think it's ever been flushed.
Donkeypunch is offline  
Old 04-24-2015, 08:20 PM
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Dot 4 actually doesn't last as long as dot 3 from what I've read.
It does perform better though.
You can use either, but if I remember correctly you need to flush out absolutely all the dot 3 first.

Unless you track the car, use dot 3 IMO.
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Old 04-24-2015, 08:59 PM
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Just stick with the dot 3. You can get synthetic too if your picky but if its just a dd dot 3 is fine.
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Old 04-26-2015, 10:39 AM
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Like others said, stick with DOT 3. That's what I used when I did a flush.
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Old 05-20-2015, 05:38 AM
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DOT3 and 4 are 100% compatible, and DOT4 has a much higher boiling point wet and dry. ALL DOT3 fluid is synthetic BTW. DOT3 cars can use DOT4, but DOT4 should not use DOT3, just as a car should not have lower speed rated tires installed. Performance will suffer.
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