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Re: [GMCnet] oil cooler adapter gasket [message #260601 is a reply to message #260591] Sun, 31 August 2014 22:28 Go to previous messageGo to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
Senior Member
G'day,

STOP using the gasket out of an oil filter between the oil filter adapter and the oil cooler adapter and get this kit from Dorman.

http://www.gmcmhphotos.com/photos/455-403-engine-oil-flow-path/p53706-dorman-oil-filter-o-ri.html

The O-Ring is silicone and is what really should be used in between those two components NOT an oil filter seal!

An oil filter seal is designed to be torqued hand tight, when you torque the oil filter extension fitting to 55 ft. lbs. I squashes
the oil filter seal WAY beyond it's designed crush and over time it cold flows (oozes out around the oil cooler adapter) and leaks.

Using the Dorman silicone seal results in the oil filter adapter and oil cooler adapter into a metal to metal fit with the seal in
the groove doing it's thing.

I installed one of the Dorman O-rings last year and haven't seen a drop of oil leakage from the area since then.

Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428

-----Original Message-----
From: RJW

I noticed a oil leak during a previous trip. I thought it was loose rocker cover bolts. Tighten them up and though was all OK
until I changed to engine oil today. When I looked at the filter I realized that the bulk of my leak was coming from the oil cooler
adapter. I am aware of using the gasket from the just removed oil filter as a new gasket. Well I did that with no idea of the
torque, but figured it was not very much since you don't torque an oil filter all that much and it is the same gasket.

Well it leaked a drip a minute when I stated the engine. Then I figured I would tighten it some and now it leaks more.

Does anyone know the proper procedure for using the gasket from a used filter? How much to torque it? I must admit after 16 years
of oil changes I never paid much attention to the gasket between the oil filter base and the oil cooler adapter. It never seemed to
leak before. After I changed my engine a few years ago it started to leak.

These pages are the only ones I am aware of at the photo site.

http://www.gmcmhphotos.com/photos/emergency-oil-cooler-line-repairs/p11679.html

Richard


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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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