as far as it keeping your truck healthy. How does that work exactly? Is the radiator segmented so that the oil travels through a section of the radiator. If so, then the coolant doesn't cool the oil, the air cools the radiator which ciools the oil, right?. And of course, if the oil is hotter than the coolant, then the oil is adding to the work the radiator has to do to cool the coolant as well. I think the separated components with the cooling effiency layers sounds better. Someone explain this setup for me... :)