Hi guys i have an 06 STI and im looking to change my brake fluid for DOT 5.1 but not to sure what to buy, i take it i will just have main dealer dot 4 in at the MO so dont know weather i can put synthetic or none synthetic in, would be greatfull for some advice, cheers steve.

 

Doesn't really matter so long as it's DoT 5.1.

 

I use Motul 5.1 in my 03 WRX which I got from AS Performance. I had braided pipes fitted so had it all replaced at the same time.

 

I've never had an issue, with DOT 4 even with prolonged track use.

Are you sure you need it? plus it absorbs water at a quicker rate so needs to be changed more frequently not good for the pocket.

 

It is not about the DOT rating as this does not directly influence the performance or heat resistance. DOT 4 fluid can perform better than 5.1. You have to look at the actual specs of each fluid.

I always use Motul RBF600 in mine and it is the choice of many in the know.

Take a look at the specs:
AZTEC PERFORMANCE ONLINE STORE - WHOLESALE PRICES DIRECT TO THE PUBLIC - Brakes :: Subaru Impreza :: Performance Friction Discs & Pads :: Motul RBF600 High Temperature Brake Fluid (500ml Bottle)

 

another +1 for the RBF600. Fantasic stuff!

 

Sounds good to me BOB 5 how much will i need to do a fluid change , ill give you a call and order some , cheers steve.

 

1 litre is usually enough (2x 500ml bottles).

Just click and order online

AZTEC PERFORMANCE ONLINE STORE - WHOLESALE PRICES DIRECT TO THE PUBLIC

 

Millers DOT4 is what I have been using in all my cars for the passed 6 years and I will continue to use it.

I can get it from a local Motorsport outfit for £18 a litre.

 

Has any one use halfords 5.1 if so whats it like. i can get it for £5 liter on my card.
thanks