Substandard or Contaminated Brake Fluid
Substandard or contaminated brake fluid with mineral oil or moisture will lower fade resistance or deteriorate rubber parts resulting in the leakage of brake fluid.
In case improper brake fluid as mentioned above entered into the brake system, or in case such doubt exists, disassemble the system and clean the parts with alcohol. For the parts which cannot be disassembled, replace them as an assembly. Rubber parts and brake hoses should be replaced with new ones.