Diesel - Volvo S40 Owner's Manual

Fuel system
Diesel engines are sensitive to contaminants,
such as high volumes of sulphur particles for
example. Only use diesel fuel from a well-
known producers. Never use diesel of dubi-
ous quality.
At low temperatures (–40 °C to –6 °C), a
paraffin precipitate may form in the diesel
fuel, which can lead to ignition problems.
Special diesel fuel designed for low tempera-
tures around freezing point is available from
the major oil companies. This fuel is less vis-
cous at low temperatures and reduces the
risk of paraffin precipitate.
The risk of condensation in the fuel tank is
reduced if the tank is kept well filled. When
refuelling, check that the area around the fuel
filler pipe is clean. Avoid spilling fuel onto the
paintwork. Wash off any spillage with deter-
gent and water.
IMPORTANT
Only ever use fuel that fulfils the European
diesel standard, see page 245.
IMPORTANT
Diesel type fuels which must not be used:
special additives, Marine Diesel Fuel, fuel
1
oil, RME (Rape Methyl Ester) and vegeta-
ble oil. These fuels do not fulfil the require-
ments in accordance with Volvo
recommendations and generate increased
wear and engine damage not covered by
the Volvo warranty.
1
Diesel fuel may contain a certain amount of
RME, but further amounts must not be added.
IMPORTANT
For model year 2006 or later the sulphur
content must be a maximum of 50 ppm.
Empty tank
No special procedures are required if the
tank runs dry. The fuel system is bled auto-
matically if the ignition switch is kept in
position II for approx. 60 seconds before the
start attempt.
09 Maintenance and service
Draining condensation from the fuel
filter
The fuel filter separates condensation from
the fuel. Condensation can disrupt engine
operation.
The fuel filter must be drained at the intervals
specified in the Service and Warranty Book-
let or if you suspect that the car has been
filled with contaminated fuel.
IMPORTANT
Certain special additives remove the water
separation in the fuel filter.

Diesel

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