Gasoline fuel
Petrol engines are designed to use RON 95 fuel.
Note: The use of 91 octane gasoline is permitted only in exceptional cases.
Fuel with an octane rating of 95 can be used for normal driving.
98 octane fuel is recommended for maximum responsiveness and minimum fuel consumption.
When operating the vehicle in hot weather at temperatures above +38°C, to achieve maximum power and minimum fuel consumption, it is recommended to use fuel with the highest octane number.
Warning: To avoid damaging the catalytic converter, use only unleaded petrol. To maintain the validity of the Peugeot warranty, never mix alcohol with petrol, as this could damage the vehicle's fuel system.
Diesel fuel
Diesel fuel must comply with EN 590. Diesel engines are sensitive to contamination, such as increased sulfur content. Use diesel fuel from reputable manufacturers only. Do not fill up with diesel fuel of dubious quality.
Paraffin deposits may form in diesel fuel at low temperatures (-40°C to -6°C), which may cause starting difficulties. Major oil companies supply special diesel fuel designed for outside temperatures close to freezing. Such fuel has a reduced viscosity at low temperatures and a lower tendency for paraffin to crystallize. The risk of condensation in the fuel tank is reduced if the fuel level in the tank is kept high. When refuelling, keep the area around the filler neck clean. Avoid spills on the paintwork. Remove them with soap and water.
Please note: Only fuel that complies with the European diesel fuel standard may be used.
The following diesel-like fuels are prohibited to use: special additives, diesel fuel for marine diesel engines, boiler fuel, RME1 (vegetable methyl ester) and vegetable oil. These fuels do not meet Peugeot requirements and increase wear and tear and cause engine damage.
Draining condensate from the fuel filter
To avoid interruptions in engine operation, the fuel filter separates condensate (water) from the fuel.
It is necessary to drain the condensate from the fuel filter at intervals specified in the service and warranty books, for example, after each oil change, or in cases where it is assumed that the fuel may be contaminated.
Note: Some special additives prevent water separation in the fuel filter.
To remove water, loosen the bleed screw or the water in diesel fuel sensor located at the base of the filter.
Wait until the water has completely drained.
Tighten the bleed screw or water sensor.
(Source of the article is posted at: PeugeotBook.ru)