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-   -   DOT3 vs DOT4 (http://www.hotrodders.com/forum/dot3-vs-dot4-224920.html)

mitmaks 10-11-2012 08:25 PM

DOT3 vs DOT4
 
My car manual calls for DOT3 brake fluid, would it be fine if I went with DOT4? All it does it increase boiling point?

E.Furgal 10-11-2012 08:41 PM

dot 4 is synthetic
dot 3 isn't


they don't play nice together..
I'd stick with type 3

mitmaks 10-11-2012 08:43 PM

Aren't you confusing DOT 4 and DOT5? I'm pretty sure I've read on label that you can intermix dot 3 and 4 but NOT DOT5

seltec8 10-11-2012 08:54 PM

Dot 4 is ok

Dot 3, 4, & 5.1 are glycol base
Dot 5 is silicone base
don't mix the 2 base types together.

E.Furgal 10-11-2012 09:35 PM

yup. my bad dot 5 is syn


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