Originally Posted by
elcruxio
I'll actually revisit this immediately.
A cute finnish couple did a youtube video about bicycle disc brake vs lathe. The fluid only boiled well after the rotor had been red hot (so around 1000 degrees celsius?) for quite some time. I've only ever gotten my rotor brown and my wife who has worse braking habits than me has gotten her rotors blue.
There's also the brake force one H2O brake system which uses a water and glycol mixture as fluid.
Glycol is hygroscopic. (Even so, anyone who willfully adds water into a DOT3-4 brake fluid is an idiot.)
Mineral Oil is hydrophobic. (And please don't add water or egg yolk to your mineral oil braking system.)
-mr. bill