Dot 4 or Dot 5 brake fluid what's the difference?

ramstein-dh · Jan 11, 2012

Thanks all dot 4 it is then

Iwasgoodonce · Jan 11, 2012

Not my department, but I think I remember reading somewhere that dot5 is better for bikes. The reasoning being the reservoir being small, the dot5 is less likely to boil than dot 4. If a small amount of fluid is doing a lot of stopping this seems logical? None of my brakes have ever been disc though.

Dr S · Jan 12, 2012

I use DOT5 for the simple reason that if you get a leak, a burst or damaged hose, or simply are hamfisted and slightly drunk whilst working on your brakes, it won't damage the paint on your bike like DOT 4 will if not removed quickly.

Si

jamabikes · Jan 12, 2012

oh and cyfa....dot 4 absorbs water from the air so buying and keeping a big bottle may not be wise.

ramstein-dh · Jan 12, 2012

jamabikes":2u45kike said:
oh and cyfa....dot 4 absorbs water from the air so buying and keeping a big bottle may not be wise.

Yeah you are right on that one buddy.
I was working with dot 4 the other day and i ended up feeling sick and had a sore throat.
So i threw what little i had left in the bin , as all my stuff is stored in
my apartment and not a good idea really.

well looks like i might got for dot 5.1 :roll:

Dot 4 or Dot 5 brake fluid what's the difference?

ramstein-dh

Retro Guru

Iwasgoodonce

Old School Grand Master

Dr S

Old School Grand Master

jamabikes

Old School Grand Master

ramstein-dh

Retro Guru

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