WARNING: Do not remove pressure cap or any hose with the system hot and under pressure because serious burns from coolant can occur.
WARNING: If hole for dipstick tube in oil pan is not plugged, coolant will enter oil pan. Serious engine damage can occur.
CAUTION: Before removing plug in oil pan, clean residual coolant from area.
The engine cooling system will push any remaining air into the pressure container within about one half hour of normal driving. As a result, a drop in coolant level in the pressure container may occur.
If the engine cooling system overheats and pushes coolant into the overflow chamber of the pressure container, this coolant will be sucked back into the cooling system ONLY IF THE PRESSURE CAP IS LEFT ON THE PRESSURE CONTAINER. Removing the pressure cap breaks the vacuum path between the two chambers of the pressure container and the coolant will not return to the cooling system.