What is the best coolant ver 2.0?
As far as the best coolant for removing heat from your engine, it would be 100% water. You might even see better heat removal capability if there is a coolant additive mixed with it. Obviously, 100% water should be used in racing only applications and only by advanced users. Its use in a normal passenger car is NOT recommended even for short use. Water has a very high heat capacity. The reason it is mixed with ethylene or propylene glycol is to lower the freezing point below 32F and raise the boiling point above 212F. Both water and ethylene or propylene glycol are essential to the coolant’s function.
