Before winter nails you, you know you have to check the antifreeze in your 1999 Volkswagen Passat. If necessary you have to add antifreeze. You know that, if you start with one kind of antifreeze, you need to have your radiator drained and flushed before you switch to another type of antifreeze. In a perfect world, though, you'd continue to use the same antifreeze, from the same maker, that Volkswagen first put in your Passat.
The original equipment manufacturer antifreeze VW installed in your 1999 Passat at the factory is made by Pentosin, and the OEM reference number for this product is G 012 A8F M1. It’s available to the general public through most auto parts houses and your Volkswagen dealer as Pentofrost SF antifreeze. It comes in both pink -- an anti-corrosive variety -- and clear. Its freezing point, when mixed 50-50 with water, is -38 deg. C or -36.4 deg F.
