Kinkajou

I would like to hear your experience from using Motul braking fluid, RBF 600 is supposed to be used in a racing environment where high boiling point is important.

So would you recomend it for a C4, or would it damage the system.
I understand that it is a Dot 5, non silicon fluid, but not sure.

It sounds like it would be difficult to boil so maybe it would be a good choice for track days and even for a daily driver.

I do not know if it absorbs moisture very easily.

So I would like to hear your coments on the subject,
thanks
Roberto

outnumbered

Motul 600 is Dot4. It should be fine to run in your C4. It has worked fine in the C6. No boiling after 16 days on the track.

Miaugi

96LT1

Motul 600 is okay. I used it in the past for a couple of years in my C4. The only issue I had with it was that it seemed to absorb moisture more readily than ATE.

AUTO_X_AL

Works great in our 86. Have yet to have fluid related issues with it.

Gary2KC5

Motul 600 and ATE blue/amber are considered to be the 2nd best brake fluid out there. I've used both and they work very well. The advantage with the ATE is that you can change the color when you change fluid making it easy to know when the new is in and the old is out.

Castrol SRF is hands down the best fluid on the planet.

cost of a liter of ATE or Motul about $25. cost of a liter of SRF about $70.

FasterIsBetter

I've been using ATE SuperBlue for years and love it. It works very well, never had it boil on me even under severe conditions, and it's reasonably priced. Shop around. I've been buying it for about $14/ltr. can. I got lucky recently and bought a bunch of cans for $5 ea. at a race shop close-out. So I'm set for a couple of years now.

IMHO, the only reason to go with Castrol SRF is if you are doing some serious wheel to wheel racing or endurance races. For normal driving and for HPDE and track days or autocross, ATE or Motul are both perfectly fine.

yakisoba

/agree. Motul for me, and it's been good. Support the fluid properly by using stainless lines too. Firmer pedal for more laps.

yellow01

Been good for me.

J.R.

I have been using this in my race car for 5 yrs. and in my street/track car for the past 3 years and not a single problem. Because the headers are so close to the reservoir in the C5 I switched to the Motul 600 and it eliminated the brake fade I was experiencing on hot track days.

KBRVETTE93

I use motul. Good stuff!

ICaughtVetteFever

Even for HPDE and AutoX, SRF only needs a bleed of the calipers and not a full flush every track event. Also has better boiling points for extra insurance. Cheaper over the long run, less work, and you know you have the best money can buy. IMO no reason not to use it.

John Shiels

Then look at the true cost per mile per liter and that makes it even closer in price. There is no fluid in your car as important as brake fluid.Motor oil may blow your motor but bad fluid may let you hit the wall. Personally I hate Motul and would rather run a Wilwood fluid if not SRF.

Jason

I use the Motul 5.1

63Corvette

I concur.

NASCAR314

OK, I'm still looking for an answer to this part of the question.


C4's are hard on brakes, brake fade comes in fairley fast during HPDE's and High- Speed autocrosses when sevral laps are run back to back.
Regular brake fluids DOT3 and DOT4 even when brand spanking new have troubles in C4's

So, what is recommended to use, by normal "flushing / bleeding" a system containing DOT 3 or 4 brake fluid for track use and street use combined? (not an all out racecar)

I have been using Valvoline Synthetic DOT 4 (non-silicone) with poor results IMHO on HPDE's even fresh fluid every day.

Motul 600?
ATE blue / amber?
Castrol SRF?

Are these "silicone" fluids?

What do NASCAR teams use?

Kinkajou

I have read that only DOT 3 can be used. Other fluids could damage the components.
Curiously I also red that you could flush perfectly the system with alcohol and then use any fluid without problems.

I have found boiling problems, but I understand that fading comes from a brake pad being so hot that it turns kind of slippery.

Let's her opinions from persons with the facts and knowledge.

bobmoore2

I used it in my C4 religiously, and now I use it in my C5. It helped prevent brake fade due to boiling the fluid, and I never had a single problem from it.

I don't know whether it absorbs moisture easier than other fluids, but I doubt it. Even if it did, its wet boiling point is higher than the dry boiling point for a garden variety fluid.

I strongly recommend it for any and every car; and especially if it is track driven.

Aardwolf

DOT 5 is silicone, DOT 5.1 is not. http://en.wikipedia.org/wiki/DOT_5.1

I have Motul RBF 600 in mine and it is fine. Any high temp. non-silicone fluid is fine. If you bleed your brakes often you will know how many pumps it takes to clear the caliper of old fluid. Suck the master empty, put in the new fluid, pump six times at most, and your caliper has new fluid. I only use one to two pumps on the bleeder per track day.

If you are having trouble with the fluid each day, I would suggest brake ducts, or a higher temp. pad. Also a better caliper would be in order. I have the C5 calipers on mine.

heavychevy

I had ATE blue boil on me last weekend and brake failure because of it, of course I was driving my porsche with brembos on it. Needless to say ATE will never go on track with me again. I did 3 9 lap sessions at Little Talladega with at least 1 hour between. Then on my fourth lap of my fourth session the brakes failed. I am fortunate to not have any injuries and still have my car (in one piece) I have experienced long pedal in the pits several times with the ATE, granted my car is 3400 lbs (without me in it) I am a pretty aggressive driver.

Not trying to scare anyone but I am severely dissapointed in the fluid because I wasnt braking all that hard and it didnt fade much before going. My car is heavier and I turn pretty fast times so if you are HPDE in a lighter car I may not worry but I'm going with SRF from now on.