Bob Rouleau

With the track season a month away, I dropped my car off at the dealer to get all the fluids changed (my habit, fresh oil ,tranny, and brake fluid) . I asked them to use ATE Super Blue/Amber brake fluids which I have found to be superior to the Pentosin that dealers normally supply. I got a call saying that the Technical Rep has told dealers to use only Motul 5.1 for cars which will be used on the track. Is this a local thing or has Porsche made this their standard for North America?

KINGSRULE

I use Castrol SRF

The best

Bob Rouleau

Agree that SRF is the superior fluid but I have never had a problem using the Super Blue. From what I saw on the Web, Motul 5.1 is a non silicone type fluid with a high boiling point like a silicone without the spongy pedal issues typical of silicone based fluids. I'm curious as to whether Porsche Cars is making this suggestion across the board or if it's local.

bob_dallas

I don't have the dealer do my brake fluid but I'll try to remember to check when I go by later. I use SRF but I've heard good things about the Motul as well.

Todd Serota [TracQuest]

I haven't heard anything about an official requirement from Porsche, but I've got ATE Super Blue in my GT2 (as in all of my previous cars) and it works great. The PCCB Pagid green pads should work so well. Additionally, the car was at a dealer whose service department knew it has ATE Super Blue in it and they didn't say anything.

Eyal 951

I used Motul RBF 600 recently, with a 600 degree boiling point. Though I haven't tried it out on the track yet, I like the fluid a lot. Motul is a good company. I don;t have any reservations. I don't know what 5.1 is. I put in DOT4 btw...
~Eyal

rsnodgrass

The local Porsche dealer flushed my brakes last month with ATE Super Blue with no questions asked (except that it needed 1.5 cans to fully flush).

jecey

We use the Motul Dot 5.1 (avoid Dot 5, with silicone), for our race bikes (Supersport world championship). So, the Motul is def. a very good choice (and a bike is much more sensitive to the quality of the brake fluid).

mooty

motul 600 in all my p cars. dealer never said a thing.

brh986

While on this topic our local PCA requires the break fluid be flushed every 3 months and replaced in order to be elidgible for DE. Isn't that a little excessive if you're running 500-600 degree boiling point racing fluid and running in one of the lower classes? Seems like a waste of time and money to me. If you haven't boiled your flued or otherwise gotten water vapor in it is there any reason to change it?

MJones

You won't necessarily know if you have boiled your fluid...
Interesting to note that after being in the pits of the #39 at a Grand Am race at Fontana, last year, they bled the brakes after every track session as a matter of course.
Preventative maintnance for 100% braking performance. Not a waste of time

Todd Serota [TracQuest]

I'd say that's excessive if you haven't done any DE events during the 3 months, or even if you've only done 1. Also, total novices aren't using their brakes nearly as hard as, say, instructors, so I'd say it's also excessive for them. Finally, even if you're doing track events, it depends on the track. Laguna Seca is brutal on brakes while other tracks are relatively easy on them. One event at Laguna could be equal to 2 or 3 events at other tracks in terms of how much abuse the brakes take.

jecey

The Dot 5.1 is much more sensitive to vapour/water than the Dot 4.
For that reason, we change it at every race. But this is race condition. In normal condition (road, and DE) you can do it every 6 months.

Bob Rouleau

Excellent info. Thanks!