| abstract |
The present invention relates to a brake fluid containing in the form of a soluble compound from 1 to 100 parts per million of a metal chosen from cobalt, lithium and barium. It also relates to a method for differentiating a brake fluid in which a small detectable amount of a metal chosen from cobalt lithium and barium, in the form of a soluble compound is added to the brake fluid. Furthermore, it also relates to a method for identifying a brake fluid in which the brake fluid is tested to determine whether it contains cobalt, barium or lithium. |