I also Have the 7.3 , and usually when Idling waiting for the child to finish class or wife finish shopping and I'm jamming out to some old tunes in the truck

. I have the generator button on my favorites tab on the screen so I click that and turn on the generator, kicks the RPM up to 950 or so from the 600 +/-, so high idle ish. I don't know if it actually helps but in my mind I feel better thinking I have more oil flow , Its a simple routine I follow that is almost second nature anytime I sit more that a few mins. Makes me "THINK " I'm doing my part to help reliability...
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