Date:         Tue, 26 Jan 2016 13:15:39 -0500
Reply-To:     Ed McLean <email99@BELLSOUTH.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Ed McLean <email99@BELLSOUTH.NET>
Subject:      Re: Cold starting oil report Mobil 1 15w-50

This probably means the viscosity of the cold oil is allowing the pump to
overwhelm the pressure relief valve that's suppose to limit oil pressure
to something like 60 psi.

I had a '78 BMW 635csi that had low oil pressure so I ran 20w50 Castrol in
the summer and locked the oil cooler thermostat open.  I forgot to change
to lower viscosity and remove the thermostat lock one Fall and on the
first cold day it blew the large O-ring right off of the oil filter
canister.  It seems the oil cooler was after the filter and before the
pressure relief valve...

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