1985 Vanagon.  Turned the rear heater fan on last night and was soon
greated by the smell of antifreeze.  Today I removed the covering from
the rear heater and in the process found the insulation under the
carpets soaked with antifreeze.  When I look at the heat exchanger, the
small radiator like thing, there is some corrision at the bottom.  I ran
the van until hot but could not find anyt leak.  Turned the heat on and
off with the switch under the seat.  What I did find was, when I put
sidewise pressure on the switch antifreeze squirts out from this
housing.

Questions:

1.  Any ideas what needs to be replaced.  Bently manual has zip on this
heater.  Will I need a Rear Heater Core and Rear Heater Valve?

2.   Should I eliminate the whole thing, kids would be cold, and just
connect the in & out hose?

3.  How can I get the antifreeze out of the cork like insulation under
the carpets?

Any assistance would be appriciated.

thanks