Greetings,

If you deliver pizza with this diesel, and only away from the car for a few minutes, I'd leave it running. I don't think it would drink that much fuel restarting it each time, but if the neighborhood seems safe let her run, or get a second key and lock it while it's running and you're at the door giving pizza and collecting the cash. Like others have mentioned, there are several things causing you to lose fuel, from a leak in the tank seal to lines to improperly adjusted IP or valves perhaps to bleed lines and return line. Just need to check out from the tank forward and fix what's leaking or seeping and your mileage should come up some. I do a 40 mile stretch one way to work each morning, they call it the hell run because it's nothing but hills and dips and curves galore, but I still maintain about 27 mpg with such terrain and traveling at 65mph most of the time. Gotta love the country to travel this road, or don't want to take the alternate route which is 20 miles longer.


Charles