What about what I did with my oil pan? Drill a hole between the bolts in the front and the bolt holes in the back .Drill to the size of the alum tubing that you plan to press into the holes .Weld the tubes in place,they should be at least 3/8 dia .Now the cool air will be flowing through the tubes cooling the hot oil .WOW an oil cooler with out any hoses to leak or a fan to burn up. My oil pan has been used for years with no leaks and it is not polished .
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