Test showed thermostat wasn't getting hot enough and they suggested adding liquid first after car cooled down. How do I check it and what type of liquid needs to be added? They didn't tell me that? 2004 Mercury Mountaineer
How can I check to see if the thermostat just needs liquid added? on 2004 Mercury Mountaineer
Get someone who has more car savvy to give you a hand! Consult the owners manual.