Brake fluid Compatibility

[Mickey_7106]

Hey guys,

Was searching the forum for brake fluid recommendations and noticed some people were running fluid other than DOT 3? I always thought that you had to run with whats on the reservoir cap due to brake lines or system being incompatible with higher dot fluid. Can anyone shed any light on this? Was considering Motul or Amsoil.

 

[Fless]

If your truck calls for DOT 3, you can safely run (mix) DOT 4. Best to do a full flush with DOT 4 and stick with it.

DOT 3 Vs. DOT 4 Brake Fluid Differences: Can You Mix Them?

What is the difference between Dot 3 and Dot 4 brake fluid, and are they compatible with each other? All this information you will find in this article.

mechanicbase.com

 

[Mickey_7106]

If your truck calls for DOT 3, you can safely run (mix) DOT 4. Best to do a full flush with DOT 4 and stick with it.

DOT 3 Vs. DOT 4 Brake Fluid Differences: Can You Mix Them?

What is the difference between Dot 3 and Dot 4 brake fluid, and are they compatible with each other? All this information you will find in this article.

mechanicbase.com

Yeah, need to flush my system minus abs since i dont have tech 2. Thank's for that article. Gonna check the price difference between dot 4 and 5.1

 

[exp500]

Careful using DOT5. It's really for race vehicles that get drained often.

 

[Mickey_7106]

Careful using DOT5. It's really for race vehicles that get drained often.

Im looking at Dot 5.1, but you're right. it will require a slightly sooner flushing than DOT 3