99' 2500 v10 - Front Hubs Very Hot - Replaced Calipers & Master Cylinder - Need Input

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Sep 13, 2014 | 04:46 PM

#11

warreng5995

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Quote:

Originally Posted by AtomicDog

Wonder if your brake fluid is contaminated - might want to flush your brake lines completely and install new fluid - personally, I used DOT4 brake fluid.

I know of DOT 3 and DOT 5 (which is a synthetic that will not absorb water) brake fluids.

I also know that DOT 3 can NOT be mixed with DOT 5.

I used DOT 5 in a couple military trucks, as that is what is called for and what was used in them to start with. I believe that some (or maybe many) motorcycles use DOT 5.

What exactly is DOT 4?

Can it be used in a DOT 3 System? (I assume it can from your statement)

Can it be mixed with DOT 3 fluid? As in if you drain a system, the traces of DOT 3 fluid that would be left coating the inside of the lines and cylinders and such?

And what in your opinion makes it better than DOT 3?

Last edited by warreng5995; Sep 13, 2014 at 04:50 PM.