Clutch/brake fluid cooked.

[robin]

I wouldn't worry about it unless it happens again ...

Cheers,
Robin

[CubanGav]

When I boiled the brake fluid it was after ages at knockhill. The fluid was duff before I started (realised after) and it still took a fair few big stops to boil it. How you would manage this on the road is a puzzler without something else gong on.

Service schedule on the K cars states new brake fluid every 12 months http://wiki.seloc.org/a/Servicing

Could it be as simple as not bled properly at last service change or off fluid?

Gav.

[CubanGav]

I wouldn't worry about it unless it happens again ...

Cheers,
Robin

And this

[Rich H]

Service schedule on the K cars states new brake fluid every 12 months http://wiki.seloc.org/a/Servicing

Note that it's not part of an A,B or C service...

I'd go with old fluid, replace and ignore.

[CubanGav]

Ah. So does that mean just check and replace if required?

[C7Steve]

Thanks for all the responses guys.


I will e-mail Craig and ask if it got changed for the C service in March. Will post answer afterwards.

Ps Gav, you missed a great weekend away, up at Achmelvich. See you hopefully on the next one.

Steve.

[CubanGav]

I know but I nearly killed Alan the weekend before with exhaust gasses so it was a non starter.

Next time, hopefully in something sporty.

[cla5h]

Brake fluid change is generally over and above the regular service, but MMC include in the price of their service.

Craig told me they normally use 0.5 ltr of fluid (they used 1 ltr on mine as my old stuff was blue [Ate]),however as the capacity is 2 ltrs then I wouldn't class it as a fluid "change".

I don't know if they only touch the 4 corners, or if they also bleed the clutch as part of this.

[IanD]

Steve,
Since you were talking about other cars with brake upgrades, as you know mine is a s2 111s as well, I've recently got Carbon Lorraine RC5+ pads but standard discs and was previously running normal Mintex pads before that and never had any major issues. Know you have been out your runs with the Aberdeen boys but should be a reasonably similar comparison - so it must be that closet braker
As others have posted since I started this post, I know Murray's always replace mine and i believe it is their standard approach to do that - normally they note it on the service schedule and highlight in invoice so that should be easy to check or alternatively a chat with Craig.

[Ferg]

With old fluid and ferodo brake pads it took only 6 laps at knockhill to cook my brakes on my first ever dry track session. After replacing with RB600F (?) fluid and CL5+ pads I've not had a single problem since.

[tut]

Personally if it has boiled I would change the fluid.

tut

[robin]

I had two sets of fluid boil with RS5+ pads - once at OP, once on Frolic. Using standard DOT4 fluid, nothing fancy.

Either the RS5+ allow more heat into the calipers, or I was braking harder than usual?

I've since reverted to the Pagid RS42 and no problems yet - will find out at Spa if it's dry!

I probably ought to consider using a SuperDOT4 type of fluid, but never have bothered.

My clutch fluid was also really bad when I had the emergency clutch change pre-frolic a couple of years back - I don't think I had ever bothered bleeding out that part of the circuit.

Cheers,
Robin

[C7Steve]

E-mail back from Craig this morning saying that the fluid is changed on all services.

Steve.

[dirkpitt]

It does sound like you need a good bleed through the system. This includes the clutch, as that I suspect gets easily missed. I think it’s safe to say to use a good quality dot4 fluid.…1 litre should be enough to complete a good bleed through IMO.

The colour should be a clear to light tan colour if good ….a more murky brown to blackish if not good….

Also, check the brake pad thickness (especially the inside pad, as I have noticed this wears double the outside pad!!)…the thinner the brake pad material the more likely the fluid with experience heat transfer on a long period of usage, like the run we had on sat…..that could be a reason for your brake feel or fade…etc…

Check also the quality of the disks as iand mentioned he has changed his over my place and the fronts inside of the disks were heavily worn or lipped.

Once you have done all that and are happy, a nice trip to dukes pass will bed then in just right…or a good track day…