Brake fluids

Replenishment cannot compensate for irreversible changes occurring in an aging fluid. The boiling point drops. The chemical composition changes. The effect of corrosion inhibitors is worsening. The top-up can be used for a fault when it causes the brake fluid to leak.

In principle, the various brake fluids can be mixed, but provided that they have a glycol base (this must be indicated on the label). If the base is different or not indicated on the label, it is not recommended to mix, as liquids may be incompatible.

As a rule, it is recommended to change the brake fluid once a year or every two years. Of course, this is also highly dependent on driving and mileage. The reason is that the brake fluid is very hygroscopic, which means that it tends to absorb water.