Unlike most manufacturers that build their gasoline engines and diesel engines based on different platforms, Kubota builds its gasoline/LPG/NG (natural gas) engines based on its diesel engines. The WG/DF/DG engines are solidly based on Kubota’s Super Mini Series, Super 05 Series, 03 Series, and V3 Series diesel engines. This makes most of parts are interchangeable between Kubota’s gasoline/LPG/NG engines and diesel engines in the equal engine series. These engines are 3- and 4-cylinder liquid-cooled engines.