<font color='black' size='2' face='Arial, Helvetica, sans-serif'>I <font size="2">have a specific test procedure that I use on oil coolers, prior to attempted cleaning.<br>
It involves the use of a nasty-ass chipping-hammer, the pointy end...<br>
Oil coolers are cheap, racing engines aren't.<br>
Glen<br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br>
From: John Frymark via Fot <fot@autox.team.net><br>
To: toodamnfunky <toodamnfunky@comcast.net><br>
Cc: fot <fot@autox.team.net><br>
Sent: Wed, Jan 3, 2018 2:27 am<br>
Subject: [Fot] Oil line & cooler flush<br>
<br>
I was in the industrial cleaning industry for a while and the only effective oil cooler cleaning I knew of was done by immersion in an ultrasonic tank with a pressured flow through the cooler. The ultrasonic action dislodged particulates which were extracted by the fluid flow through the cooler. This used aqueous cleaning solution (solvents do not work with ultrasonics) heated to 180*F and with a mild alkaline degreasing agent. It is cost justified in fleet maintenance settings, but buying a replacement oil cooler is probably less expensive for us racers.<br>
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John Frymark<br>
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Sent from my iPad<br>
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