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Re: testing an oil cooler

Subject: Re: testing an oil cooler
From: Barney Gaylord <>
Date: Sun, 24 Jul 2005 11:53:42 -0500
At 07:40 AM 7/24/05 -0400, wrote:
>.... How do I check the oil cooler radiator for leaks, for blockage, etc?

1.)  Run water through it with a garden hose to check for free flow.  Flow 
in both direction to flush out any residue (trash) that might possibly be 

2.)  Apply moderate air pressure and submerge it in water to check for 
bubbles (leakage).

3.)  Finally apply air pressure at least 1.5 times as high as maximum 
pressure expected in operation (burst test).  An oil cooler might be 
expected to handle operating pressure up to 100 psi, so the test pressure 
should be 150 psi.  Wear goggles when you do this.  If it blows (very 
unlikely) you might get heavily splashed, or maybe even hit with a bit of 

Barney Gaylord
1958 MGA with an attitude

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