power steering fluid for the track

[jahcy]

will the flash point matter for track use? does the flash point have anything to do with "boiling over"?

 

[kschachn]

Flash point defines the temperature at which a material ignites when in the presence of a flame. It wouldn’t have any direct connection with that.

I’d talk to a racing fluids company such as Red Line or HPL for this application.

 

[oil pan 4]

will the flash point matter for track use? does the flash point have anything to do with "boiling over"?

How is a synthetic ATF not enough?
Do the rules forbid using a power steering cooler?
The most over kill off the shelf hydraulic fluid I can think of off the top of my head is mil-83282. It's an PAO Ester blend with a focus on combating the effects of high temperatures.

 

[nthach]

Define track use. There’s many cars doing SCCA or similar track days with the fluid that’s in their systems. I don’t think someone autocrossing a Miata/WRX/M3 is changing PSF.

Cop cars(Ford P71 Crown Vics/cop version of the Taurus and Explorer or the 9C1 RPO of the Impala/Tahoe/Silverado) have fluid coolers for the power steering system but they’re using regular PSF.

If it was me, I’d use a “synthetic” ATF or Pentosin CHF11. If you have a Honda, stick to the Honda stuff. Of course, “race” cars don’t have power steering(unless it’s a Prius/Versa EPS conversion, which has become popular in the hot rod community as of late).

 

[dvblanch]

Underdriving the pump helps also

 

[RallyXaDSM]

Redline D4 resisted boiling/overflowing more than generic Dexron in my old car, but the large cooler and baffled reservoir I eventually added made far more of a difference. Granted that was for rallyx/autox with a steering quickener and modified pump, so far more constant back and forth steering inputs to stress the system. For track use like a road course, a good quality synthetic like Redline D4 (or whatever similar product that is compatible with your application) would probably be good enough.