Quote:
Originally Posted by TampaF87
You could use the F80 guide for the M3/M4. Same brakes.
As for which fluid, Motul RBF660 is great if you are only going to track. Updated performance slightly over the RBF600, but if you are regularly driving on the street, the 660 will pick up more moisture and require more frequent changes. RBF600 is a better dual-purpose fluid. I hear great things about on-track performance of the Castrol SRF, but I haven't heard much about how it is to drive on the street.
I've always used RBF600.
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Did you have a link to the F80 guide you speak of, per chance?
Thanks!