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      12-22-2011, 08:58 AM   #13
bigjae1976
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Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Wichita, KS

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2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
I've used SRF and Motul RBF 600 You will likely need to bleed motul after every weekend or 2-3 days at the track. Your mushy pedal after some track use on Motul is normal.

I kept SRF in for about 9 months and it was still good. When I finally bled the SRF out, it was super dirty but still usable.

...but Motul is still cheaper over the long run if you bleed the brakes yourself. I go through about .5L every bleed.

If you pay a shop to bleed the brakes, SRF is the way to go.
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2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red