Has anyone used any in their cars? The question came to mind when I told my co-worker (VW guy) about how hot the Boxster tends to run despite what the gauge reads on the dash. He suggested using G12 coolant, something that modern VWs/Audis use, it seems, if I ever do a full flush of the system. I told him about how it's been pretty strongly said that only Porsche's coolant is to be used, but that got me wondering why that is?
Anyone care to provide some info? Either about using a coolant othe than Porsche's with observed benefits/issues, or providing some details about why we can't use anything else in our cars. Thanks!
