I recently replaced my oil cooler lines and the aluminum threads seems to come off on the lower line(on the oil cooler it's the left, I have yellow teflon tape on it). I taped the bad threads and carefully screwed on the new hose.

It seems to work well but there might be a slight leak at the threads. A bigger issues was that it was leaking from another part of the oil cooler. I'm not exactly sure but I was able to remove the 13mm nut at the bottom of the cooler and remove the base of the cooler. I noticed that there are 4 o-rings.

Has anyone ever replaced these o-rings to stop a leak? I figured I'd give it a shot since the replacement of an oil cooler is pricey.

I may also have to use a die on the threads to see if I can get a better bite with the nut that attaches to the cooler. I may have to take it to a machine shop to do the work.

Any thoughts?

Thanks.

pete

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