Prospeed RS683
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MolaKule
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What the heck are you talking about?
Context, background, etc would be helpful.
Context, background, etc would be helpful.
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HAHA, my bad. Prospeed RS683 is a brake fluid manufactured here in the US. It has a dry boiling point of 683 degrees. It is compatible with DOT 3,4, and 5.1 brake fluid. It sustains very well under high temperatures, compressability, and high temp stability. It is used bu Andretti Autosport, Ron Howard in his Le Mans car, and racers all over the world automotive, truck and moto.
I've used their older, lower DRY boiling point fluid in the past (GS 610), and it was pretty good, maybe better than RBF 600, as far as pedal feel/longevity goes (the Motul stuff has a bad rep for being VERY hygroscopic, and doing this VERY quickly).
IF you are not going to change/flush it out VERY often, or at least bleed it after every race/open track/HPDE weekend (IF not every session on a heavy car!), then I would be looking at the highest WET boiling point I could get/afford.
The Castrol React SRF still looks to be the champ in this respect/area, and has a rep for NOT taking on moisture very quickly at all, so I am saving my coin up for this 'liquid gold', or maybe I will sell some blood/organs in order to procure some.
That being said, I am going to use the Prospeed/Torque stuff in my clutch master cylinder, since I can flush that out in about 10 minutes taking my time (THANK GOD for remote slave speed bleeders!! :!).
IF you are not going to change/flush it out VERY often, or at least bleed it after every race/open track/HPDE weekend (IF not every session on a heavy car!), then I would be looking at the highest WET boiling point I could get/afford.
The Castrol React SRF still looks to be the champ in this respect/area, and has a rep for NOT taking on moisture very quickly at all, so I am saving my coin up for this 'liquid gold', or maybe I will sell some blood/organs in order to procure some.
That being said, I am going to use the Prospeed/Torque stuff in my clutch master cylinder, since I can flush that out in about 10 minutes taking my time (THANK GOD for remote slave speed bleeders!! :!).
Just ordered a case of the RS683. After talking with the owner of Prospeed for about 20 minutes and "tapped the depths of his tech knowledge," I feel like this is a great fluid. The only way to know for sure is to run it. I am now a local dealer and myself and a few of the other techs will be running in their daily drivers as well as track cars. I will be monitoring the moisture content regularly to verify. I will let you know how things progress
Originally Posted By: 855R
Just ordered a case of the RS683. After talking with the owner of Prospeed for about 20 minutes and "tapped the depths of his tech knowledge," I feel like this is a great fluid. The only way to know for sure is to run it. I am now a local dealer and myself and a few of the other techs will be running in their daily drivers as well as track cars. I will be monitoring the moisture content regularly to verify. I will let you know how things progress.
THANKS!
Their RS683 does have the next highest posted/claimed WET boiling point after the crown jewel React SRF stuff, so I might just give it a try as well (for the brakes), especially since it retails for about 1/2 the levy of said Castrol fluid now that they've dropped the 500 ml price down to $25.00 (from $39.00).
It's actually a BARGAIN at that price point!!!
Just ordered a case of the RS683. After talking with the owner of Prospeed for about 20 minutes and "tapped the depths of his tech knowledge," I feel like this is a great fluid. The only way to know for sure is to run it. I am now a local dealer and myself and a few of the other techs will be running in their daily drivers as well as track cars. I will be monitoring the moisture content regularly to verify. I will let you know how things progress.
THANKS!
Their RS683 does have the next highest posted/claimed WET boiling point after the crown jewel React SRF stuff, so I might just give it a try as well (for the brakes), especially since it retails for about 1/2 the levy of said Castrol fluid now that they've dropped the 500 ml price down to $25.00 (from $39.00).
It's actually a BARGAIN at that price point!!!
Originally Posted By: oliver88
Take a look at Endless RF 650 brake fluid...new factory fill on the Porsche cup and RSR
What's it's WET boiling point, and does it cost as much as the SRF (I'm guessing YES, if it is a Stuttgart factory fill on their 'streetable race cars', and all of the high-zoot Nippon tuners use it as well
)??
Take a look at Endless RF 650 brake fluid...new factory fill on the Porsche cup and RSR
What's it's WET boiling point, and does it cost as much as the SRF (I'm guessing YES, if it is a Stuttgart factory fill on their 'streetable race cars', and all of the high-zoot Nippon tuners use it as well
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