Brake Fluid Contamination
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
Indications of fluid contamination are swollen or deteriorated rubber parts. Swollen rubber parts indicate the presence of petroleum in the brake fluid. If brake fluid is contaminated, drain an d thoroughly flush system. Replace master cylinder, proportioning valve, caliper seals, wheel cylinder seals, Anti-lock Brake System (ABS) hydraulic unit, and all hydraulic fluid hoses.