The best one I seen was the guy stopping to get something from inside a gas station. he pulled in, idled up the engine and went inside. now this truck had a full aftermarket loud exhaust! I couldn't believe he thought he looked cool doing that? I actually felt sorry for him that he is like that.
Any newer diesel doesn`t need to be hot to drive. that thinking goes back to the early days of the diesel engine. around the mid 70`s or so they made them so they could be driven when cold. anything in the last 30 years or so doesn't need to be run for any length of time. idling into a campground has the turbo sufficiently cooled down. and starting a diesel 5 minutes before you leave is also OK.
