about a week I noticed that my radiator had a small leak in it. So I got some super flush and it has stopped leaking. Now today while driving over to my boys house I noticed that my temp gauge started to rise while I was driving the car. The coolant level is straight and both fans turn on and cool the car. I was thinking it is the thermostat but I am not sure. And how hard is it to change. I am suppose to be going to a friends house later on tonight and lives about a hour away. What do you guys think. And I already flushed the fluid in the car. Also since it is over heating am I going to need a new head gasket now?