|A common complaint against the Abrams is that the gas turbine engine is a fuel hog compared to the diesels found on competing tanks. On the other hand, I also read somewhere that a gas turbine doesn't that much more fuel to go from idling to putting the tank in motion while for a diesel it is the opposite, meaning it needs a lot more fuel once you actually start driving the tank. Don't know how valid this is. If true, it would seem to me that the M1 would want to avoid being in idle as much as possible.. it does have an aux power unit so it can shut off the main engine and save gas. Anyone care to comment?