MacGregor Clan

Thanks for your response. I know that the system holds 10.6 qts, but I don't know how to open the t-stat to pull the fluid out of the engine block and heater core. How does a power flush do that? My alternative is to replace the 4+ quarts now and do so each year (instead of every 2 years, as recommended in the owner's manual). Thoughts?

I am trying to replace the coolant on my 2012 Fusion Sport 3.5 L. When I opened the drain on the radiator and opened the fill bottle cap on the cold engine, only about 4 quarts drained out. The vehicle is level, and even tried raising the front end. Only one gallon drained out. I assume that the thermostat needs to be opened to allow the rest of the coolant to drain out without the engine being hot. Or maybe not? If so, how to I remove the T-stat? If not, what else should I do? Thanks for any help!