How must vehicles be refitted to run with pure plant oil?
Before unmodified vegetable oil is used as a fuel, the engine must be refitted for the fuel to correspond to the viscosity and combustion properties of the plant oils. The refitted vehicles either pre-heat the fuel and the injection systems or are equipped with a so-called “2-tank system” in which the engine is started with diesel and only changes to vegetable oil when the operating temperature has been reached. Pure plant oil should not be used in pure form or mixed with diesel in unadapted engines. The combustion properties differ too widely from those of diesel and damage to the injection systems and deposits in the engine may occur.