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Finally got that stubborn 6.7 Powerstroke oil cooler to seal after three tries
Was doing a full service on a 2012 F-250 in my home shop yesterday. Put the new oil cooler in, torqued it down to spec, and it still leaked a steady drip from the rear housing. Took it apart, cleaned the block surface again with a razor and brake cleaner, same leak. On the third try, I used a tiny bit of anaerobic sealant on the cooler gasket, not just the housing, and let it sit for an hour before adding oil. Bone dry after the test run. Anyone else find these things need a little extra help to seal right?
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jamieb8018h ago
Had the same fight with mine last year. Ended up using that copper spray gasket stuff on both sides of the cooler gasket, that finally did the trick.
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felix41416h ago
My third try with the regular paper gasket looked like a toddler cut it out with safety scissors. That copper spray is basically magic in a can, saved me from tossing the whole project off my garage roof lol. I still have the old cooler sitting out back as a reminder of my shame.
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cole_flores4416h ago
Man, that third try feeling is the worst. I've been there, and that little dab of anaerobic sealant on the cooler itself is the real trick (the gaskets alone just don't seem to cut it sometimes). Letting it cure before you add oil is key, too, otherwise the oil just washes it right out. Glad you got it sealed up.
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