octane CITROEN C4 2018 Owners Manual

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Practical information
Fuel used for petrol engines
The petrol engines are compatible with bio-fuels that conform to current and future European standards and can be obtained from filling stations.
Fuel used for Diesel
engines
The Diesel engines are compatible with biofuels that conform to current and future European standards and can be obtained from filling stations.
Diesel fuel that meets standard EN590 mixed with a biofuel that meets standard EN14214 (possibly containing up to 7% Fatty Acid Methyl Ester).
Diesel fuel that meets standard EN16734 mixed with a biofuel that meets standard EN14214 (possibly containing up to 10% Fatty Acid Methyl Ester).
Paraffinic Diesel fuel that meets standard EN15940 mixed with a biofuel that meets standard EN14214 (possibly containing up to 7% Fatty Acid Methyl Ester).
The use of B20 or B30 fuel meeting standard EN16709 is possible in your Diesel engine. However, this use, even occasional, requires strict application of the special servicing conditions referred to as "Arduous conditions". For more information, contact a CITROËN dealer or a qualified workshop.
The use of any other type of (bio)fuel (vegetable or animal oils, pure or diluted, domestic fuel...) is strictly prohibited (risk of damage to the engine and fuel system).
The only petrol additives authorised for use are those that meet the B715001 standard.
Travelling abroad
Cer tain fuels could damage the engine of your vehicle. In cer tain countries, the use of a par ticular fuel may be required (specific octane rating, specific sales name…) to ensure correct operation of the engine. For any additional information, contact
your dealer.
The only Diesel additives authorised for use are those that meet the B715000 standard.
Petrol that meets the EN228 standard, mixed with a bio-fuel meeting the EN15376 standard.
Compatibility of
fuels
Diesel fuel at low temperature
In temperatures below 0°C (+32°F), the formation of paraffins in the summer diesel fuels may result in abnormal operation of the fuel supply system. To avoid this, the use of winter diesel fuels is recommended, keeping the tank topped up to more than 50% of its capacity. If in spite of this you experience difficulties starting the engine in temperatures below -15°C (+5°F), simply leave the vehicle in a garage or a heated workshop for a while.