A coolant exchange after 3 years or 60.000 kilometers was necessary. The main issue of the first coolant was the short additives lifetime. The red mud deposit would plug the channels or emery metals and produce more corrosion. Additionally it prevents the appearance of „red mud“. That prohibits an electonic exchange of different precious metals and disable a stonger corrosion. The coolant creates a protection film between the metal material and cooling lubricant. Hows does the protection of an antifreeze work? That technology refer to the use of anorganic silicate acid. From that time both coolants found their difference in the chemical basic of EG and PG.īecause both coolants used silicate, they were declared under the Inoganic Acid Technology (inoganic acid technology]. The first mixture advancement used less toxic EG and more of the expensive chemical polypropylene glycol. During that time the conventional antifreeze was compatible with every vehicle and peformed well in cooling the engine, preventing freezes, secure the heat transfer and protecting the cooling system against corrosion. In there the silicate was a strong additive for corrosion protection. They all based on a constant balance of ethylene glycol (also called Glycol / Glykol), water and additives. That seems to be a little bit weird because the first coolants had the same ingrediants and colour. For example in orange, blue, green, yellow or purple. If you look for coolants in several retail stores you have a choice between many coolants in different colours.
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