Thanks for all the info everyone, I think now at 56,250 miles, a brake flush is due anyways, nice to know the boiling points of the brake fluid, the Castrol stuff is suprising!

LOL

SRF = SUPER RACING FLUID!

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2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)