Hello to all. I am in the process of replacing a Ford E350 7.3 Powerstroke van that has been a great vehicle (290,000K) but we've outgrown it. I've narrowed it down from the Promaster, Transit, and Sprinter to the Promaster gas or diesel. We run about a 2 hour radius from our office and have 20 to 30 office visits a day with the average visit lasting less than 10 minutes. Currently our E350 diesel is rarely turned off from the time it is started till the end of the workday and it averages a solid 17 mpg. It doesn't have to run continously but with the Powerstroke we just leave it running. To maximize route effeciency I need the 159' High Top and am torn between the simplicity of the proven gas combo and the effeciency of the diesel setup. I have test driven the gas and diesel and like them both. A friend has the gas hightop extended and consistenly gets 18 with mixed driving. We run a lot in the hills of East KY and TN and will have at most 1500 pounds on board. I've alway been a diesel person and am afraid of killing the van with the gas engine. However, I've been reading the nightmares that the Mitubishi commercial trucks have been having with the same Fiat 3.0 diesel and automated manual. We can't afford downtime and I'm much more concerned with having safe dependable vehicles than trying to squeeze out a few extra mpg. Sorry for the lengthy story and thanks in advance for the advice and comments.