A cleaning additive protects the catalytic converter of a gasoline engine from clogging and corrosion of the entire fuel system. Keeps both the injection system and the combustion chambers clean. Clean engines consume less heat and emit fewer exhaust gases. Add to the fuel as a preventative measure every 2000 km, preferably immediately before refueling for the fastest mixing. 300ml is sufficient for 70 liters of fuel.

Beneficial properties of Liqui Moly fuel additives see here