Engine/Transmission (1994 - 1998) dot3 dot4 dot5

[dodge cummins]

what brake fluid is recommended for our trucks a dot3 dot4 or dot5

 

[Dave Remillard]

They come out of the factory box with DOT 3, but do yourself a favor and go DOT 4. Handles heat better and brake fade takes longer to happen under extreme conditions. Just my humble opinion anyways.

 

[Rman]

I recommend 4 also, definitly not 5, 5. 1 is compatible however, it's hygroscopic properties aren't as good as 4. So you have to stay on top of changing it out frequently. I just put Dot 4 in my truck with no problems. 3 and 4 are compatible to mix, do not mix DOT 5 with them however.

 

[DPelletier]

I recommend 4 also, definitly not 5, 5. 1 is compatible however, it's hygroscopic properties aren't as good as 4. So you have to stay on top of changing it out frequently. I just put Dot 4 in my truck with no problems. 3 and 4 are compatible to mix, do not mix DOT 5 with them however.

What he said.



Dave

 

[Rman]

BTW, one of the more recent TDR issues had an excellent write up on brakes and brake fluid. It was in the last year, just can't recall the specific issue.

 

[1dslram]

I just changed to EGR rear shoes, Stainless lines and Motul 5. 1 brake fulid. I have not had enough time for a complete test but the instant changes is I use less pedal for normal stop and go driving. It is taking a lot less pressure on the pedal for the quicker stops.

Bruce