I tell ya Tim I thought it was all ready to go.... My Father-in-Law said that he had been testing it for several days and I had no reason not to believe him...... BUT I guess I was wrong! I talked to Cletis today thinking that the thermostat might have been stuck slightly open....enough to allow coolant but not open enough to do a very good job! Don't really know at this time. BUT I do plan on working on this issue soon and as a winter project!