Quote:Most brake fluids used today are glycol-ether based, but mineral oil (Citroën liquide hydraulique minéral LHM) and silicone (DOT 5) based fluids are also available.
From what I've read, DOT 3 and DOT 4 are pretty effective, just avoid Dot 5 (silicone based).
I also tried soaking the parts for 2 and a half days and it didn't soften at all.