try to place the front of the car as high as possible above the rear when filling the coolant. also, fill the upper radiator hose into the head until coolant fills the radiator to be certain the cooling system is as full as possible. the heater section is difficult to fill, as air gets trapped in there when you are filling. so uhnooking the upper heat hose to let air out is a plus.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!