Just like the title says... it's summer and hot here. I've only owned the truck since spring when it never dropped below 40 out, I would like to figure this out BEFORE the cold weather hits this year if possible. I go to the gym 4-5 times a week and it's only a 2 mile drive so I am considering leaving my truck run while working out to prevent possible problems due to frequent short trips and not warming up properly. If I don't have it I will probably do the high idle mod so I can keep the motor warm and EGT's above 300. My truck stays fairly cool even in 80-90 degree weather at idle... I rarely see EGTs over 270 once it's sat for a minute or two, no matter how warm the motor is. Don't know if that's good or bad