Brake Fluid: DOT 4 replace DOT3

[Tourist]

Hi. The manual calls for DOT3 brake fluid in brakes system. Can I use DOT4 instead? I am assuming I could but would like some confirmation. Thanks.

 

[Squishy]

Any glycol-based fluid will work in your system. That means DOT3, DOT4, and DOT5.1 (or DOT4+ in some cases). DOT5 is silicone-based and will not play nice with the existing fluid.

 

[MonumentOiler]

Yes, but moving to DOT 4 is not always an improvement over DOT 3. There is a trade off because the Borate esters in DOT 4 are more hygroscopic and will need more frequent replacement.

Good read here ....
http://www.stoptech.com/tech_info/wp_brakefluid_1a.shtml

 

[meep]

I find that Dot 4 is aways just a little bit softer "feel" than 3. I don't like it.

Mike