Over the years I found that often times a Citroen would come into the shop or a person would send in a set of spheres to rebuild from a car that had a contaminated hydraulic system .

Always bad news to any Citroen owner, this can prove to be one of the most expensive single problems an owner of a Citroen can have. This includes 2CV s because I have seen the wrong fluid put into their hydraulic brake system too.

Back in the old days, the reason for contamination could mostly be blamed on confusion, for there was a period of time from 1966 to 1969 1/2 that cars being sold over here in the U.S. had LHS2 (Brake Fluid Based ) from the factory, while cars being sold in other parts of the world had LHM or (Mineral Based) fluid in them.

Over the years one thing led to another with many owners and people who really should not have been working on the cars putting in the wrong type of fluid.

What I am going to explain is the method I always used to tell if a system is contaminated with either Mineral fluid or Brake fluid.  With this test  we are talking about a Citroen with a complete hydraulic system , ie: brakes, steering, suspension etc.

Here’s a little video to show you how…

The video should have shown you the steps, but if you like to read them as well, here ya go. More >