Is your 6.0 Powerstroke overheating? Or you loosing coolant due to a leaking water pump?
Make sure you replace your tired stock 6.0 Powerstroke water pump with a new Alliant Power Water Pump from Sinister Diesel to be sure your engine is free from further issues. The factory water pump on the Powerstroke can cause problems when horsepower is added. Additionally, leaks from the water pump mounting gasket are common on older high mileage vehicles and can cause a loss of coolant that can lead to significant engine damage with a large repair bill.