Oyishdog

Anyone tried Prospeed gs610 brake fluid? Looks to have great specs

http://www.gs610.com/specifications.htm

I am looking to move up and away from ate...I still cannot put myself to buy SRF, so please dont suggest

Oyishdog

wow im shocked no responses yet did everyone have a busy day at work?!?!

tcmc5

I've always had good luck with Motul 600 and at $13 per pint it's reasonable.

daveydc5

I have had great results with Motul 600 and Ate Super Blue Racing. Of course Castrol SRF is great stuff. Since those meet the needs of the most demanding racers, I'd tend to stick with a known quantity.

Let us know how it works if you try it!

Oyishdog

I think i might try it out...why not...they claim Andretti/Green Racing uses it in their Indy cars...whether or not that is a true statement, who knows.

Mikelly

Sorry Dude, Been working and sick... I've been using Gs610 for over a year with wonderful results...

Mike

Oyishdog

coo, thanks for the feedback, Mike

Falcon

How much ($) is it?

Mikelly

http://www.ogracing.com/eshop/home.asp?categ=68

$14.95 per bottle.

Mike

Oyishdog

og is great, i buy lots of stuff from there!

gpm30236

Have been using it for about 8 months, seems to work well, Use the brakes agressively , and have never boiled the fluid and when i bleed em the fluid looks good, use it both in the Z06 and a Denali p/up .

Snidley

Where? Saferacer site has it for $24.95/16oz. (And thats on sale!!)

John Shiels

remember GS610 is 16 oz vs the SRF which is per liter. SRF can be had for about 69-70 per liter. 33.80 fl oz per liter. Figure your cost based on the same quanitiy.

steve-d

The GS 610 has the highest dry BP period.

610 F*

SRF is not DOT approved. There's a reason: the fluid isn't shown to be compatable w/rubber used in DOT systems. Use at your own risk.

Does anyone have the MSDS specs re the Dry BP for Castrol SRF? It isn't as high as most assume.

Steve

Edit:
Here is the MSDS re Castrol. It is dated from 3/01, prior to the non Dot certification of the Castrol.

http://gs610.com/images/castrolsrfmsds.pdf

It is rated on this sheet at 300* C or 572* F.

40* difference between the Castrol DBP and the GS610 DBP.

SD

John Shiels

wet is what I look at because I don't dump it before every track day. After 5 years I haven't had any problem with it. They may not have bothered to get DOT test as I doubt many would use it on the street. That is not their market niche.

steve-d

I understand your POV regarding DBP and WBP. However, leaving it in a race car from one event to the next is not what race brake systems are about. The whole point it to maximize the effectiveness of a particular system's capabilities. Leaving the fluid as it was from last time isn't the way to maximize the potential of your system. One is then just "Trusting" your brake fluid hasn't:
* Boiled and left residual gas in the caliper;
* Been exposed to inordinate moisture and suffered degredation due to absorbtion.

Most using race fluid in track cars aren't overly concerned with WBP as they'll never come across a situation where the fluid has been left in a system long enough to become contaminated.

Steve

John Shiels

I have and regular C5 with Wilwoods not a race car with a pit crew. I try to minimize the work I have to do on the car. I have went 1,000 track miles on the SRF with no bleed at all. It did need bled at that point but it worked well till close to the 1,000 miles. I regularly get the rotors hot enough to look red in daylight pictures so it does get some good use and heat. I tried it and I am glad I did take LG's advice. It was cheaper for me per mile also. I had Motul 600 and didn't like it. It would turn to the color of dark tea in one day and fade on my car.

fmrfast

I used SRF for years without an issue before switching to Motul RBF 600 due to cost. If I remember correctly they recommend max of 1 or 2 years in car, therefore relying on the typical driver to change fluid may have been a stumbling block for a DOT approval. And just as john stated I don't think they cared as it is not their market. Depending on brake temps the SRF is the only fluid that can go a double or triple race weekend without bleeding & without any degradation. So without a good friend there at the end of each day to help you bleed brakes or in the AM when you are trying to get ready for the race the Castrol was the way to go. My friend Pete comes with me & neither of us are crazy about the fire drill brake bleeding, fortunately with the RBF 600 it only needs to be done at the end of the day. Only under extreme conditions did we have to bleed after qualifying to get rready for the race. I use RBF 600 but found the Castrol superior.

I have had this list for a number of years so some fluids have been introduced & some of these may have changed.

Brand Wet Boiling Point Dry Boiling Point
Castrol SRF 518°F 590°F
Motul RBF600 420°F 593°F
AP-600 410°F 572°F
ATE-Super Blue 392°F 536°F
Valvoline 333°F 513°F
Castrol LMA 311°F 446°F
Ford HD 290°F 550°F
Wilwood 570 284°F 570°F
PFC-Z rated 284°F 550°F
AP-550 284°F 550°F

My Car is a race prepared C4 & definitely not as fast as Johns C5 & yes the motul turns to dark tea after one race