Motul 5.1 or RBF 600 with STaSIS 332 monoblock-4. Do I need RBF600 or 5.1 is fine? STaSIS sent 5.1
03-12-2008, 01:50 PM
#11
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Did a dry boiling point test on both Motuls, ATE super blue (not to be used in an S4) and Pentosin
Racing.
The Pentosin had the highest boiling point followed by the RBF600 and the 5.1.
There was a 30-50 degree gap between each.
Did not have a chance to test them wet (exposed to atmosphere for a time, or used).
So I use the Pentosin Racing.
It's also generally cheaper than the Motul.
The Pentosin had the highest boiling point followed by the RBF600 and the 5.1.
There was a 30-50 degree gap between each.
Did not have a chance to test them wet (exposed to atmosphere for a time, or used).
So I use the Pentosin Racing.
It's also generally cheaper than the Motul.
03-12-2008, 03:11 PM
#14
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It has been known to hurt the seals in the master cylinder as well as dye the resevoir blue
I've used it in my old bmw with no problem.
And it actually made brake bleeding easier if you switched from blue to gold and vice versa (same formula just different colors)because you could see when the old fluid was out.
And it actually made brake bleeding easier if you switched from blue to gold and vice versa (same formula just different colors)because you could see when the old fluid was out.
03-12-2008, 04:32 PM
#15
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How is the relative humidity in your area...well, what I really mean is
considering what you're using, how often do you flush the brake fluid?
higer boiling point = more hygroscopic
PS: how do you like your 749s?
higer boiling point = more hygroscopic
PS: how do you like your 749s?
03-12-2008, 05:09 PM
#17
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IIRC the reason we started shipping the 5.1 is it was a Bosch approved fluid and wouldn't . . .
void the ABS system warranty.
RBF 600 or Castrol SRF.
Castrol is often regarded as the best.
RBF 600 or Castrol SRF.
Castrol is often regarded as the best.
