Diesel Fuels - Mercedes-Benz 300SD 1981 Owner's Manual

Diesel Fuels

Use only commercially available vehi­
cular diesel fuels No. 2 or No. 1
(ASTM D 975 No. 2-D or No. 1-D).
Change engine oil in compliance with
section " Engine Oil Change and Oil
Filter Service" if diesel fuels are used
whose sulphur content exceeds
0.5 % by weight. Marine diesel fuel,
heating oil or the like must not be
used.
At very low temperatures the fluidity
of No. 2-D diesel fuel may become
insufficient due to paraffin separation.
To avoid malfunctions, No. 2-D diesel
fuel of a lowered cloud point is
marketed during the cold season.
At temperatures below 0° 0/32° F
use winterized or No. 1 diesel fuel
only. If not available, a certain quantity
of kerosene 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 ra­
Ambient temperature
0° C to — 10° C/ + 320 F to +14° F
below - 1 0 ° C /+ 1 4 ° F
Fuels C o o lants Lubricants etc.
tios shown refer to the total mixture.
We recommend not to exceed the
mixture ratio, dependent on prevailing
temperatures by max. 50 % .
Adding of kerosene to No. 1-D diesel
fuel is not recommended even at low
temperatures. The use of further
additives is not recommended.
No. 2
Diesel Fuel Kerosene
o/o
70
50
o/0
30
50
i
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