Hi all

Discovered something interesting the other day. When I open my heater
control, the engine temperature drops substantially. It appears that the
heater control is a valve which stops the circulation of engine coolant thru
the heater circuit.

This can be a very useful arrangement because the volume of cold, stationary
water in the heater pipes appears to be enough to significantly cool the
entire (?) engine in an emergency.

Regards
Nigel
Cape Town,SA

[text/html]