Frequently Asked Questions

What are the advantages of coolants that have been officially approved by vehicle manufacturers?

Vehicle manufacturers do not “recommend” any particular engine coolants, but they do grant official approvals. New vehicles are filled with approved engine coolants when they leave the factory and these can be replaced during the warranty period without affecting the manufacturer’s warranty. On average, engine coolants have to undergo thirty different tests before they are approved by the engine manufacturers. These consist of different corrosion and compatibility tests with the original components of the cooling system, but also engine and vehicle tests. Engine manufacturers do not give official approval to coolants until they have passed all the tests. The process takes three to five years and is very expensive. If any changes are made to the coolant formula, the entire approval process has to be repeated. GLYSANTIN® has the most approvals from leading vehicle manufacturers.