I should do that. I am getting moist air out of the vents and the water reservoir was low yesterday, so I think I have a heater core issue or a water valve issue. It runs too well to be a head gasket issue. Now I must peruse the heater section of the forum to see who else has had this problem and how they fixed it. I'll look under the rear foam today for signs of water. We're changing the oil today, and I want to get her ready for a trip up to Georgia