Originally Posted by Setoutguy
Why not go with an air to air cooler from someone like Setrab, an oil filter adapter and some braided line from Earl's??? Less stress on the radiator which might not be able to handle the load. Does the police package for the Durango come with a larger radiator???
The radiator is the same as in the GC, police package or not.
The disadvantages to an air to oil cooler on a daily driver are twofold:
1) They tend to over cool the oil. You want your oil to get up to around 190-195 at the sensor, meaning it's a bit hotter elsewhere (210-230). This is so you boil off condensate and other volatiles that form in the engine during cool-down.
2) The factory coolant-to-oil cooler is inherently safer. The only hoses are coolant hoses and generally under lower pressure than oil within oil lines. If you lose a coolant line, you can stop the vehicle and will likely not suffer catastrophic damage unless you weren't paying any attention. If you lose an oil line on an air-to-oil cooler your oil pressure will almost instantly go to zero and if you aren't at idle (when you're least likely to lose it), you will very likely have wiped bearings or at least significant damage before you can stop.