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Checking and refilling levels180
Diesel
Diesel*
Diesel fuel must correspond to DIN EN 590 (EN = “European standard”). It
must have a cetane number (CN) of at least 51. The cetane number indicates
the ignition quality of the diesel fuel.
Notes on filling with fuel ⇒ page 178.
Biodiesel*
The biodiesel fuel must comply with the DIN EN 14.214 (FAME) Standard.
• Biodiesel is a methylester obtained from rapeseed oil.
• DIN is a German abbreviation for “Deutsches Institut für Normug e.V.”, the
German standards institute.
• EN means European Norm.
• FAME is the English abbreviation “Fatty Acid Methyl Ester”.
Your Authorised Service Centre can also be consulted to know if the vehicle
has been prepared for biodiesel use.
Things to note about RME fuel (biodiesel)
• The performance of a vehicle using biodiesel maybe somewhat reduced.
• Fuel consumption of a vehicle using biodiesel may be slightly higher.
• RME fuel can be used in winter at temperatures down to approx. -10°C.
• At outside temperatures below -10°C, we recommend using winter diesel
fuel.
• Your vehicle is prepared to be refilled with up to a maximum of 7%
blended biodiesel.
Caution
• RME fuel can damage the fuel system in vehicles which are not suitably
adjusted.
• If you decide to use biodiesel in your vehicle, please use only RME fuel
which is DIN E 14,214 compliant.
• If you use biodiesel that does not meet the required standard, the fuel
filter could become clogged.
Note
• In case of low exterior temperatures and a fuel biodiesel percentage of
higher than 50%, an increase in gas emission may occur during operation of
the independent heating.
• The fuel filter may become clogged when fuel is changed to biodiesel. For
this reason, we recommend you that, when having run 300 or 400 km after a
fuel change, the fuel filter change must also be done. Also note the instruc-
tions in the Inspection and Maintenance plan.
• If the vehicle is to remain parked for more than about two weeks, we
recommend filling the fuel tank with biodiesel and driving about 50 km in
order to avoid damage to the injection system.
Winter driving
Diesel can thicken in winter.
Winter-grade diesel
When using “summer-grade diesel fuel”, difficulties may be experienced
under 0°C temperatures because the fuel thickens due to wax separation. For
this reason, “winter-grade diesel fuel” is available in some countries during
the cold months. It can be used at temperatures as low as -22°C.
Ibiza SC_EN.book Seite 180 Dienstag, 8. Juli 2008 5:36 17
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