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Message: <blockquote data-quote="sledesigns" data-source="post: 38626" data-attributes="member: 2358">Lucky you, my gasser drank a lot digging hard or pushing snow.  The oil burners are way ahead of gas in a lot of ways, maybe why they made it cost more than gas.I haven't ran numbers on machinery but Diesels are very efficient compared to gas, and moreso closer to idle.  Gas runs at an air/fuel ratio of near 14:1 while Diesels make optimum power at a similar ratio at wide open throttle.  Gas must idle at the same 14:1 ratio while a Diesel idles at 50:1 or higher. Basically while running, gas drinks all the time.  A Diesel sips lightly until under a load, then drinks. I finished my mpg research in a 7400lb 1 ton Diesel last week.  Under a load (pushing 70mph air) to idle (27mph air resistance)70mph 16mpg.  55mph 22mpg.  40mph 32mpg.  Idling 27mph in 6th gear 42mpg.  Love them Diesels</blockquote>