Two different pieces of information below. First from Ben Huot and the other
I copied and saved long ago, from Dennis ?. Hope it helps.

http://pages.infinit.net/engine/cooling_system_flow.htm

1) Engine should be dead cold. If not successful bleeding in 10 minutes,
Walk away, have lunch, beer etc, come back later.

2) Prepare coolant supply, have ready. Pre-mixing will make it easier to
keep proper ratio.

3) Open thermostat bypass valve and valves to both heater cores.

4) Fill main reservoir as much as possible. Allow time for as much
coolant to fill into engine as possible.

5) Start engine. Use something to hold engine speed around 2,000 to
2,500 rpm.

6) Open radiator bleeder (partner will help).

7) Continue to fill cooling system while air is being expelled from
bleeder and reservoir.

8) When both flow water steadily, close radiator bleeder, then reinstall
cooling pressure cap, (It was tested and know to be good?). You can also
close the bypass now.

9) Allow engine to return to normal idle speed.

10) Return heater valves to where you want them. Test system. Make sure
radiator fan works. Don't forget to top off the expansion tank behind
the license plate. Any residual air will eventually work its way out. If
not, than you a problem.

11) After van is operated for a while, test coolant concentration to
make certain you have the proper mixture, (50-70%).

Dennis

Bob Stevens
'87 Syncro Westy

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