I also own a 1999 F-350 7.3 Liter Powerstroke Truck. Whether it is right or wrong, I often leave my engine at idle when I do short task (fill up my tank, run into the store, dropping off something, etc...). This is often for less than 5-10 minutes at a time. I understand that starting is hard on engines, but I also have heard that the fuel loss at start up (or the amount of fuel used to start the engine) is greater than the diesel used to idle for a few moments. Now, I know at some point (after just a few minutes...) this would no longer be true, but is the above statement accurate?
So, let's consider a couple of situations...
-To leave your truck (not a 'big-rig') at idle for 20 minutes or more is BAD? Right?
-Is it better to leave your engine at idle when you run into a store for less than 5 minutes, or should you shut your engine off?
-What about fuel burn at start up vs. fuel burn during idle?
Maybe someone can help try to answer some of these questions. As always, thanks for everyone's help on this forum...