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Roostie · 04-01-2021, 08:02 PM

I've been using Stop Tech STR600, which I got for about $10 a pint less than RBF 660. It works fine. When I hear reports of high performance brake fluids working badly, my suspicion is user error - some air got in the system. I have done this to myself before.

Most performance fluids have boiling points far higher than OEM fluid, and I don't think very many of us are pushing the car's brake fluid into the 20-25 degree delta between the boiling points of a $16 performance fluid and a $26 fluid. But, $10 for a little added insurance and the promise of better feel isn't so bad. I may try a bottle myself next time, to see if I like the pedal feel any better - not that I am upset with the STR 600 in that regard.

04-01-2021, 08:02 PM	#7
Roostie all it takes is cash Drives: 2018 LS V6 1LE; 2000 BMW 540i 6MT Join Date: Jan 2017 Location: San Diego Posts: 375	I've been using Stop Tech STR600, which I got for about $10 a pint less than RBF 660. It works fine. When I hear reports of high performance brake fluids working badly, my suspicion is user error - some air got in the system. I have done this to myself before. Most performance fluids have boiling points far higher than OEM fluid, and I don't think very many of us are pushing the car's brake fluid into the 20-25 degree delta between the boiling points of a $16 performance fluid and a $26 fluid. But, $10 for a little added insurance and the promise of better feel isn't so bad. I may try a bottle myself next time, to see if I like the pedal feel any better - not that I am upset with the STR 600 in that regard.