7

The brake fluid on my 98 Mada 626 is black and nasty looking, and I'm planning on bleeding the brakes to change it. However, I don't know what's currently in it because the Workshop Service Manual says, "SAE J1703, FMVSS 116 DOT-3 or DOT 4"

Since I'm going to bleed all the brakes, can I just use which ever one I want and disregard whatever might already be in there?

9

Dot 3 and Dot 4 are mixable, you can use whatever you want.

Just do not put Dot 5 into it, thats a whole different thing and not mixable with Dot 3 or Dot 4.

  • And do not confuse DOT5.1 with DOT5, because DOT5.1 IS compatible. Also, if you do mix DOT3 in with DOT4, consider your system to be working at a DOT3 level as far as performance goes. – Pᴀᴜʟsᴛᴇʀ2 Feb 16 '17 at 19:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.