Coolants other than Porsche's

[tonycarreon]

Originally Posted by JFP in PA

The OEM stuff is actually a very good coolant; we have seen cars 6-8 years old with the factory fill that still tested well for pH, freeze point, etc. So life expectancy should not be an issue, as long as the system is clean and the coolant is mixed with distilled water (prevents contamination and degradation of the coolant additives package).

took 10 years before i had to flush mine and then it was because the water pump finally gave out.