Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Re: BRAKE FLUID RES. SLUDGE(YOGURT LIKE TOP LAYER)
It could be that someone mixed DOT 5 (silicone) fluid with regular DOT 3 or DOT 4 glycol-based fluid. That will produce a mess like you describe.
The proper cure is to remove all the seals and cups, flush the system with alcohol and then new pure fluid, and then replace everything. And if I were doing that, I would use DOT 5 when I put it back together. It's great stuff and perfect for a Jeep since it won't absorb water.