Hi and thanks for the info. Last evening when I added coolant, there was some pressure in the tank. This morning, no pressure in tank nor was the coolant hose on top of rad. hard. Started the car and waited until engine was hot, and the coolant hose was quite warm, no pressure on the hose at all. One strange thing though, there was no heat coming from the car's heater either. Removed the coolant tank cover, no pressure and there was steam coming up from the tank. Ralph