rwmorrisonjr
Full Access Members
2012 Expedition with rear HVAC and heavy duty cooling with 176k miles. Following FTM's flush and coolant swap process. Going to change all the hoses, thermostat, and water pump after flushing the system including a distilled water flush. Going to blow the water out of the heater cores before refilling. I've got 6 gallons of 50/50 yellow for the coolant swap after I install the new parts. Will I need a gallon of concentrated coolant first to account for any water left in the block or will the 50/50 be enough since the block will be almost empty?