rustymax. well see you started it now. yes bigger costs more diesel costs more the diesel fuel in some places cost more. Look at all the kenworths whites navistars macks volvo even some saabs (scania) if gas was the way to go we wouldn't be smellin diesel smoke (older stuff) the new stuff runs cleaner if you can swing the extra money and take care of it the engine will last a long time. JMHO and 5cents worth
(inflation)