Originally Posted by jwfirebird
for the hoses-you should splice the prestone tee (garden hose adapter) into the heater core line. i believe its the inlet side, check the directions when you get it.
for the plug-not necessary, when you hook your hose up after completion of the tee fitting installation you run the engine with your garden hose on and this replaces everything in the heater with clean water. then you drain the radiator and refill, just remember that there is a bit of water in the engine and heater. so you would probably want to do a quart or two of strait concentrate before topping off with 50/50.
Do you have to worry about the cold garden hose water breaking the engine block when the cold water comes in contact with the hot engine parts???