What antifreeze? I have been driving a Hyundai Tucson petrol for a year, 1.6 l, 177 hp, BJ 2017 and ask the following question on behalf of some other drivers who also drive the Tucson and have the same problem: My cooling water shows a 15 ° frost protection. That’s why I wanted to increase the protection somewhat. Unfortunately, the information in the Hyundai workshops is not uniform. The one multi-brand workshop sells a red Opel-Fr for the Hyundai east protection (a blue-green frost protection was filled in from the factory), the other contract workshop sold “G12”, the 3rd contract workshop fills G30 from BASF. All assure, one should only take this frost protection for the Tucson engine sold by them. Which frost protection is now ok? Until 1 year ago I drove VW and bought a frost protection in the workshop with the inscription: “Only for VW engines” Therefore, there was never any discussion about which frost protection can be taken. E s is finally also about the possible loss of warranty claims. Friendly greetings ingebert