When I stripped the Oil Cooler Nipple what I found was there was a piece of corroded Aluminum stuck into the threads of the Oil Cooler Hose Nut. It acted like a Tooth and cut up 3 of the threads.
The only method I have read that can prevent that entirely is to cut a groove down the length of the Nut and split the Nut apart. But, that ruines the Nut if you pan to use the Hose Ends.
In the Repair Links section is methods to try to avoid strupping the Oil Cooler Nipples.
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