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Jeffery -

The vernatherm is like a thermostat that is inline (at least in my C172)
with your oil cooler. I stays closed until your engine heats up, then opens
to allow oil to go to your oil cooler. I discovered all of this when I had
a problem with my C172 overheating. Seems it never opened up to allow oil
to be cooled. I tried everything until someone told me about checking my
vernatherm. Replaced it and it nows runs just fine.

Terry P.


Terry Pickering                          CompuGroup, Inc.
pickering@myself.com                     Portland, Oregon USA
www.teleport.com/~compugrp               Cessna 172 & Lancair ES