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Author: Subject: Brake fluid for serious track work?
TimC

posted on 10/4/19 at 04:40 PM Reply With Quote
Brake fluid for serious track work?

Hi All,

Have dropped a bit of a b*ll*ck: have used DOT5 silicone fluid in my car as it was fine for my Locost racer where braking was basically giving-up.

Iím hammering the brakes on the BEC and boiling the DOT5. Merlin are encouraging me to pay £50/litre for Castrol React SRF. Do I really need to pay that or is there a cheaper alternative? What I donít want is something so hydroscopic that I need to change it after every trackday.






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ettore bugatti

posted on 10/4/19 at 08:28 PM Reply With Quote
Don't have to flush the whole system to get rid of the silicone?

Castrol React SRF is supposed to be very good, but have limited life time. Maximum a year, I think.

Castrol also do a React Performance DOT4 for around £12/l that might be more in line with your expectations.

Although ATE and Motul are worth a look too.

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luke2152

posted on 10/4/19 at 08:55 PM Reply With Quote
Dot 5 is not a performance fluid (at all!) It is designed for vehicles in long term storage (originally for military vehicles in 'war stores' ) as it doesn't absorb any water.

5.1 is the high temperature one. I've had it pretty cheap in eurocarparts in their own brand packaging although can't remember the price. I'd be surprised if the full branded racing ones are much different.

[Edited on 10/4/19 by luke2152]

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loggyboy

posted on 10/4/19 at 09:14 PM Reply With Quote
ATE Blue dot4. Although it's not blue anymore. Typ200

[Edited on 10-4-19 by loggyboy]

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adithorp

posted on 10/4/19 at 09:23 PM Reply With Quote
quote:
Originally posted by loggyboy
ATE Blue dot4. Although it's not blue anymore. Typ200

[Edited on 10-4-19 by loggyboy]


Got to agree with Ate Typ200. Ive been using it for a while and not had an issue since.





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RussH

posted on 11/4/19 at 09:51 AM Reply With Quote
quote:
Originally posted by adithorp
quote:
Originally posted by loggyboy
ATE Blue dot4. Although it's not blue anymore. Typ200

[Edited on 10-4-19 by loggyboy]


Got to agree with Ate Typ200. Ive been using it for a while and not had an issue since.


and me





Duratec Westfield

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