Light Diesel Oil is also called LDO. It is non-automotive diesel fuel. The main uses of LDO are for engines and equipment with low RPM. It has a flashpoint greater than 66 degrees celsius. It is widely used in stationary applications, certain types of boilers, furnaces, Air pre-heaters, Fertilizer plants, Bunker, and as basic fuel. LDO (Light Diesel Oil) is a mixture of components that are derived from the distillation process of crude oil. LDO is also known as distillate fuel or marked oil.