dbvettez06

I have a RPS single disc clutch, fluid is a bit dark looking, can't remember what fluid to use....Is it DOT 4 brake fluid or syntetic fluid???????THANKS

bumble-z

I like the Prestone Dot 4 syn. It is clear , which makes it eazy to see when the fluid is getting cloudy, dirty and being able to see small particulates. Good luck.

phils C5 vette

I use namebrand off the shelf DOT 3 on the brakes and the clutch. its not the best, but I change the reserve often because its easy.

TurboBerserker

Would there be any benefit to running something like superblue for higher performance clutches?

dbvettez06

Will go with your choice! Thanks for the input!

Camjamsdad

Go with a high temp fluid. Like Motul 600 or Wilwood 600exp. They cost more but have a higher boiling point. At least look at the boiling points of the fluids you're considering and select the highest temperture.

TEXHAWK0

I still use the GM clutch fluid. Supposed to have friction modifiers added over just DOT 3 brake fluid.

Oldvetter

I use this also. Sometimes it is hard to find a dealer who stocks it.

TurboBerserker

That's what I was thinking.

ATE Superblue:

Features/Benefits of ATE Super Blue Racing Brake Fluid:

* Blue tint of fluid makes bleeding brakes easier
* Ideal for race use, excellent choice for street driven vehicles, too
* Boiling point minimum: 536 degrees F
* Wet boiling point minimum: 388 degrees F
* Viscosity at -104 degrees F: max 1,400 mm 2/5
* Designed to last up to 3 years under normal highway driving conditions


Motul 600:

Motul RBF 600 Specifications:
DOT Rating - 4
Dry Boiling Point - 594°F
Wet Boiling Point - 421°F
Compatible with other fluids - Yes
Container - 16.9 fluid ounce (500ml) plastic bottles, factory filled with nitrogen to preserve freshness

Wilwood 600:

EXP 600 Plus has tested to 626 degrees F with a wet boiling point of 417 F. These numbers far exceed any DOT or SAE specifications

Camjamsdad

Here's a heads up on the Wilwood EXP. The bottle lists dry temp at 594*F and wet at 399*F. It's also not compatible with any other fluid. I use it and was surprised the advertising didn't match the bottle. If I had to do it again I'd go with the Motul.

TurboBerserker

I've used both Motul and ATE Superblue for brake fluid and found them both to be excellent. I alternate in my TT truck Superblue one cycle, Motul the next, because it makes it really easy to see when you've completed the fluid exchange

I will likely run Motul in my clutch.

Quick Silver Z

Wish I could find some...

LO PHAT

What exactly are the friction modifiers supposed to be doing for the clutch system?

LO PHAT

wcsinx

I buy cheap Wal Mart DOT3 chit and swap it out about twice a month.

It stays clear now, and my clutch works just fine.

B-ras

FYI, ATE makes the same fluid in amber color for exactly that reason. If you're happy with the ATE, you might want to pick some up rather than paying 3X for Motul just for the color change.

ZO6ME

+1

TEXHAWK0

I think they are referring to additives that lubricate seals, extend seal life, and reduce air entrapment. Clutch travel tends to be more than brake pistons.

GM makes the dealers order the fluid by the case, and it does not sell very fast, so it can be hard to find. I had to call around to several dealers in my area to locate some. Fortunately, there are several small towns within 10 miles of where I live. One dealer had ordered a case, and still had the full case of 12.

TGstring

I think the best clutch fluid is clean clutch fluid.

You can spend as much as your wallet can afford on the "high performance" and expensive stuff, but if you put clean new stuff in, ANY clean new stuff in, on a regular basis via the "ranger" method, your clutch will be happy.

It's so easy to flush the reservoir on a regular basis I don't see the point in putting in expensive stuff for the short term anyway.

and that is just my opinion

0Todd TCE

Unless you're boiling the clutch fluid (?really?) all this high temp stuff is not doing you any good. A more (affordable) stable fluid with a higher wet boiling point would be my choice. Reason: less moisture contamination with the DOT3 means less chance of any rusting of the slave parts or hard line if there is any.

Often the darkness comes from the type of seals used on the slave. This is not uncommon and new fluid can change in a matter of days.

TurboBerserker

Thanks Todd -- what is "high enough" for the wbp?