Has anyone switched to DOT4 Brake Fluid?

[J33Pfan]

Has anyone switched to DOT4 Brake Fluid?

Last year one of my cars had a frozen brake line with DOT3.

 

[Lancer]

It's what I've been using for about 9 years in the KJ, and the last 30 years in other cars and bikes. It will mix, but its better to do a complete flush and replace. Apparently you can also mix DOT5.1 (NOT DOT5), but I've never really looked at that - partly the expense and partly the relative rarity.

 

[LibertyTC]

Here is good information: post 7 Troy states that 3 & 4 are mixable!
I run DOT3 in mine and have had no problems.
Link: http://www.jeepkj.com/forum/f196/brake-fluid-dot3-40883/

 

[JasonJ]

DOT3 fluid froze? Hmm.. well, since it's an oil, it doesn't really "freeze", but just congeals and gets too thick to flow.

DOT3 is good down to at least -30F, usually -45F. I'm sure it never gets that low in NY. Are you sure you didnt have another problem?

 

[renegade 04]

I use DOT 3.

 

[McTudor]

I use DOT 3 also. One thing to note is Brake Fluid will absorb moisture. Combine a little water in the system with a corroded brake line and it could cause a blockage.

If you change your brake fluid regularly it shouldn't be a problem. The only ones that I have seen have problems are vehicles that have never had the fluid changed.

 

[J33Pfan]

DOT3 fluid froze? Hmm.. well, since it's an oil, it doesn't really "freeze", but just congeals and gets too thick to flow.

DOT3 is good down to at least -30F, usually -45F. I'm sure it never gets that low in NY. Are you sure you didnt have another problem?

well, as close to freezing as possible usa.gif