Autogas is the abridged name for automotive LP Gas – that is, LP Gas used as an automotive transportation fuel. LP Gas is the generic name for mixtures of hydrocarbons ( mainly Propane + Butane in varying proportions) that change from a gaseous to liquid state when compressed at moderate pressure or cooled to low temperatures. In some countries, the propane content varies according to the season as the physical characteristics of the two gases differ slightly according to ambient temperatures.
The Autogas grade of LP Gas has a relatively high proportion of propane and hence has a higher Motor Octane Number (MON), which is desirable for spark ignition engines. The Autogas has lesser percentages of unsaturated hydrocarbons, resulting in complete burning of the fuel and lower residues left after burning.
