Brake fluid?

[bebby]

Any have any advice on what brake fluid to go for, I'm after dot 5 because I managed to boil Mine at the weekend and pretty much lost all feel

So gurus amongst you I ask best option?

Many thanks

[Ric]

Toyota 5.1 is recommended and is cheap enough, makes sense to use that.

[Dnk]

How old is your brake fluid ?

 

Brake fluid attracts moisture over the years

hence it boils when it gets hot and you lose brake performance.

 

DOT 5 is Silicon based and won't mix with DOT 3,4 or 5.1 and might cause problems

to seals etc in a Glycol designed system.

 

Use DOT 5.1, it's Glycol based which is what your system was designed to use.

 

Completely replace your old fluid by bleeding the whole system, i use a vacuum

bleeder which works a treat.

 

If you want to spend more money then have a look at Motuls RBF 600 or 660

 

 

MOTUL RBF 600 and 660 (DOT4) has better dry and wet boiling points than normal

DOT 4 and DOT 5.1

 

https://www.motul.com/system/product_descriptions/technical_data_sheets/168/original/RBF_600_Factory_Line_%28GB%29.pdf?1340122148

 

 

https://www.motul.com/system/product_descriptions/technical_data_sheets/169/original/RBF_660_Factory_Line_%28GB%29.pdf?1340124817

Edited May 5, 2015 by Dnk (see edit history)

[bignum]

Castrol srf race fluid is the best but its 30 quid a litre so unless you track your car alot that may be overkill,

 

Ive been using brembo 600 and it seems ok, as dunk said motul 600/660 is also excellent.

[Chris Wilson]

If you really did boil your fluid you would have found the pedal just went right to the floor and you would have ZERO brake retardation. Sounds much more like pad fade to me.