Spent most of the day repairing the heating/ cooling system on the ole Jeep!New thermostat, housing gasket, top and bottom hoses, system flush etc.Wednesday, I get to re-drain the system,fill it with water, drain it again, and refill it with 50/50 coolant.That drain plug was a woop!You need a midget to get his hand in that tight spot.Bout cried when that compression clamp on the hose popped off the end of my pliers just as I had it all the way compressed and it hit the end of my thumb and it felt like I had bashed it with a hammer!Jeep blows some good heat now!