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12' Boss oil cooler leaking oil ?

Hi All

I have found a few discussions on the stock 2012 Boss oil cooler leaking coolant from the fittings but mine appears to be leaking oil between the cooler and the engine block. I have retightened the stud to 43 ft/lbs to no avail.
Anyone know what sort of gasket if any between the block and the oil cooler body? Dealership is clueless.


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