There is an easier way --

Squeeze the upper radiator hose flat, then crimp the small line to the reservior shut and let go of the upper hose. Coolant will be pulled into the lower radiator hose and rad.

Repeat until no more coolant pulls out of the reservoir. You will likely have to add more several times.

I believe there is a coolant bleed bolt on some heads, too.

617 engines have thermostat in the upper radiator hose, but 60x engines have the thermostat in the side of the block where the lower hose comes in, makes it easier to get them full with this method.

Usually fills the heater core pretty well too.

At least you aren't putting a new head on like I am....

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!