Use high quality fuel with detergent that meets the specification defined by EN228, WWFC5 cat. 5 or the national equivalent. Low quality fuel can damage the engine and reduce engine performance.
Do not use leaded fuels, fuel additives, or fuels with lead substitutes, e.g., manganese-based. Doing so may adversely affect the vehicle's exhaust emission control systems and the warranty coverage.
Fuel system cleaning agents should not be used, unless approved by the vehicle manufacturer. Inadequate cleaning agents may damage the fuel system.