ocr: The outstanding reature of the Diesel engine is its high efficiency at full and part load, typically 25-40%), and very low fuel consumption at idle. These are a direct resuit of the fiked (high) compression ratio at all oads, and the lack of air pumping losses. An additional advantage of the diesel is that it can burn a ower grade of fuel, which inherently has more eleryy per gallon, and usually costs less than gasoline. Diesels can also be designed to burn various grades of fuel (including gasoline) with some increase in injection pump costs, as is done in some military vehicles. Note that if ...