Automobiles are designed to use coolants with VERY specific chemical compositions. These mixtures are designed to prohibit reactions between the various metal alloys and the materials that comprise the gaskets. Automotive engines are composed of dissimilar metals, which when filled with liquids that conduct electricity, the very structure of the engine is becomes as an electrical conductor. The wrong combination of chemicals in the presence of electricity can cause an electrolytic reaction that can dissolve not only the head gasket, but quite literally dissolve the engine itself.

We often see German automobiles come into the shop with the aluminum radiators leaking at the joints, when examined we discover that the radiators structure is so compromised that it will disintegrate as it is removed. Nine times out of ten, the cars owner has had the coolant changed yearly at their local service station and thought they were maintaining the vehicle properly, in fact they may as well have been pouring acid in the engine.

Mercedes makes it's own coolant, BMW, VW and Porsche can all use PENTOSIN brand German coolants. PENTOSIN manufactures several different mixtures each meeting the chemical requirements of specific engines, built at specific times. Carefully read your owners manual to choose the proper coolant for your vehicle or simply have the coolant changed during your next service and the proper coolant used.