Note the instructions about operating fluids More.
Even small amounts of the wrong additive may lead to malfunctions occurring.
Mercedes-Benz recommends that you use brand-name fuels with additives.
In some countries, the fuel available may not have sufficient additives. Deposits could build up in the fuel injection system as a result. In this case, in consultation with a Mercedes-Benz service centre, mix the fuel with the cleaning additive recommended by Mercedes-Benz. Observe the notes and mixing ratios indicated on the tank.