It's always discussed about oil temp being necessary to burn off any fuel dilution. It's also generally accepted that you will burn it off in far greater quantities at highway speeds vs idling in park. Which brings up my question: at idle, my car will run up almost a full 1/4 hotter as far as coolant goes as long as the A/C isn't on. It gets sufficiently hot to actually overfill the reservoir tank when filled to the full cold mark before the auxiliary fans kick on to drop coolant temperature. (For those of you curious, usually within 60-70 seconds from fan on, the reservoir is drained back down to full hot.) Wouldn't hotter coolant mean an increase in overall motor temp, and raise the temperature of the oil? Or is there something here I don't understand about coolant and oil temperatures?