Thank you Dana67Dart, i read the report/testing from the link, i am having 2nd thoughts about this Evans coolant now, 1- it has a higher cylinder heads temp. 2,- aluminum parts questions, 3 - the coolant has high viscosity, while going through radiator by 20-25% which is hard on the water pump [drag], and really does not cool any better! 4- lower horsepower !, i am looking to drain this coolant out of my car, what do you think is the best way to do that? i will just use a good brand antifreeze in it's place i really thought this was a better way to go !!