While we were concerned about costs, one of the things we didn't want to do was cheap out on was the radiator. We've had problems with leaking crimped tanks in our Jeeps, especially in rough desert roads, and we wanted to increase the cooling system capacity and efficiency. We found just what we needed in the form of direct-replacement, fully-welded, all-aluminum Griffin two-core radiator from Summit Racing (p/n GRI-5-594GG-BAX), and about six gallons of 300,000-mile Be-Cool coolant. We also added some Purple Ice by Royal Purple for increased cooling efficiency. Whether towing or desert bashing, the combination of fluids and big Griffin radiator should keep the engine cool, no matter what.