How Often To Change Brake Fluid?

[evil_weevil]

Yo!

Well, most of us would change engine oil a fair bit, and maybe after a couple track days etc, but how often would you change brake fluid and give it a flush?

Im talking more cars used for track days etc here,

Would you say, do it same time as doing engine oil change?

say after 3 track days or so?

more or less?

cheers!

chris

[Kinks]

Brake fluid should be fine unless it's old or you've boiled it IMO.. doesn't need doing as often as engine oil but if you gave it a quick bleed every oil change then you'd be sorted. That'll keep the fluid moving through the lines enough that a full flush isn't necessary, if you regularly track it.

I think I did my brakes about a year ago, did a wakie day today and my coolant temp started moving before I had brake problems.. although the brakes were spongy after sitting in the pits they were fine after 1 pump once i got back in

[bnr#@]

I do mine before every track day, a couple of times had to do another bleed half way through the track day. It is a heavy GTR though and I cook the fluid easily...

[Greekos]

DOT 3

[Greekos]

DOT 3 Should be changed every year DOT 4 every two years this is under normal driving conditions, as other have said if you get brake fade/boil the brake fluid change it as you lowering boiling temp of fluid. once you boil brake fluid its useless.

[badhairdave]

i've been doing mine before every track day lately, though not by choice. Stupid leaky rear caliper....

Normally i'd do it every 3 months or so with motul rbf600 or penrite sin.

I tend to look at this sort of stuff in terms of money it costs me if i don't do it. 20 bucks spent every 2nd or 3rd day vs losing track time which roughly works out at around 400/day for me inc entry, travel and trailer hire.

[Duncan]

I normally do them every 2-3 track days. Or more often if I boil them. its pretty quick just run a bottle through them the night before

[andymoocow]

good topic Chubbs, was thinking the sam thing the other day. I waited three track days before changing it. Fresh fluid in now, giddy up!!!

[evil_weevil]

With my R33 - I did it I think every 6 monthsm cant remember....but now Im using the lil mazda alot more on the track - I think i should do it a more often!

[moobaque]

I don't think there is necessarily a golden rule. It's all about how the peddle feels. Environmental factors as well as how hard you brake on the track will determine how long it lasts. If the the peddle ain't solid anymore... New fluid time.

With my track abilities (hah which ain't that amazing) every couple of track days is so fine. But if its just street driving well over a year should be fine even with cheap fluid.

Cheers

Cam

[Moodles2]

When doing a proper flush, do you completely flush out the current fluid, run cheap fluid in the system and flush it out, then put the good fluid (rbf600 etc) in?

[badhairdave]

I just run the good stuff through.

Cheap stuff is shit, no better than 3 day old rbf 600 if any gets left in the lines.

Just run it through until you see clean fluid come out the other end and you'll get 99% of the old stuff out.

[Skyalwaysblue]

i change brake fluid before every track day.

[TypeA]

How often should good stuff like RBF600 be changed?

[Duncan]

every 12 months at most, unless you manage to boil it - if you do change it straight away.

unfortunately the better quality the fluid, the more water it absorbs, so the more often you have to change it. cheaper stuff might last a couple of years in the average mum's camry