Car running hot 1998 ford exp. Xlt 4.0 I can't find any leaks but water keeps disappearing?

Car running hot 1998 ford exp. Xlt 4.0 I can't find any leaks but water keeps disappearing?

It must be going out the exhaust then. Check the cylinder head gasket. (Nasty white gunk in the water?)

Have the cooling system pressure tested to find the leak before you ruin the head gaskets!