Thank you Jerry for your help. Would you please check the spelling of the
site again, the server could not fine it. I do not have experience flushing
an engine, I really need help doing this. You are right, I drain only 2 gal
of green coolant, still more than 2 gal in there now mix with the pink stuff.
Now I have no choice but to get it done.
I am not sure about the heater valve under the seat, would you please tell me
the proximate location under the seat? I am also not sure where is the
bleeder valve in the engine compartment, the picture in the book look very
dark, I cannot tell. I found one valve on the far end from the coolant
expansion tank, I can turn it with my fingers, is that it?
I found the Official Repair Manual of Vanagon is for experience mechanic
only. What I need is the Official Vanagon Repair Manual for Dummy... Thanks
again

Fonni
91 Westy

Here is a link to  site with lots of good information for Vanagon owners new
and old.

    http://www3.sympatico.ca/huotx/engine1.htm

Scroll down to the last item under "Cooling System".
When you drained the old coolant, did you also remove the lower radiator
hose? If not,
you only drained the engine area.
Ben (at the above site) makes it all seem pretty complicated, but the
important part
is to keep the RPM"s up while you add coolant. Also don't forget to open the
heater
valve under the rear seat. And while you are there, check the floor area
around it for
the site and smell of leaking coolant. This rear heater is known to develop
leaks.
You might also go to the www.vanagon.com site and see the resources there and
even
search the archives. They are full of information on this subject.
Good luck,
Jerry