Vehicles With Diesel Engine Diesel Fuels - Mercedes-Benz E320 Operator's Manual

Vehicles with Diesel Engine
Diesel Fuels
Use only commercially available
vehicular diesel fuels No. 2 or No. 1
(ASTM D 975 No. 2-D or No. 1-D).
If diesel fuels are used with a sulphur
content exceeding 0.5% by weight, refer
to the "Engine Oil Change and Oil Filter
Service" section. Marine diesel fuel,
heating oil or the like must not be used.
At very low temperatures the fluidity of
No. 2 diesel fuel may become
insufficient due to paraffin separation.
For this reason the vehicle comes
equipped with a fuel preheater. The fuel
preheater only works with the vehicles
interior heater operating. It permits a
troublefree engine operation to a
temperature of approximately +14°F (-
10°C) when using No. 2 diesel fuel.
To avoid malfunctions, No. 2 diesel fuel
of a lowered cloud point is marketed
during the cold season.
At temperatures below +14°F (-10°C)
use winterized or No. 1 diesel fuel only.
If not available, a certain quantity of
kerosene or fuel flow improver (refer
to MB Factory Approved Service
Products pamphlet) may be added.
Mixing only to be done within the cars'
fuel tank. Kerosene has to be filled in
before the diesel fuel.
Engine power may drop according to
the proportion of kerosene. For this
reason, keep percentage of kerosene
added to the minimum necessitated by
the ambient temperature.
The following table can be used as a
reference, if adding of kerosene
becomes necessary. The mixing ratios
shown refer to the total mixture.
Ambient temperature
+14°F to -4°F (-10°C to -20°C)
No. 2 Diesel Fuel: 70%
Kerosene: 30%
Ambient temperature
below -4°F (-20°C)
No. 2 Diesel Fuel: 50%
Kerosene: 50%
Even in extreme climatic conditions,
the maximum mixture ratio should not
exceed 50%. Adding of kerosene to
No. 1 diesel fuel is not recommended
even at low temperatures.
Do not blend other specific fuel
additives with fuel. They only result in
unnecessary cost, and may be harmful
to the engine operation. Damage or
malfunctions resulting from poor fuel
quality or from blending specific fuel
additives are not covered by the
Mercedes-Benz Limited Warranty.
Warning!
Under no circumstances should
gasoline be mixed with diesel fuel.
Always follow basic safety rules
when working with any combustible
material. Do not fill the fuel tank or
mix diesel fuel and kerosene when
smoking, near an open flame or
while the vehicle's engine is running.
An explosion or fire can result.
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