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Operation in cold
weather conditions
Nanni engines are designed to ope-
rate effectively in cold weather.
However, for effective starting
and cold weather operation, extra
care are necessary. Contact your
Nanni dealer for additional infor-
mation and local availability of cold
weather aids.
WINTER GRADE FUEL
Winter grade fuel allows to protect
the injection system when tempera-
tures fall below 5°C (40°F). Winter
grade fuel is best suited for cold
weather operation thanks to its
lower cloud and lower pour points.
However, using winter grade fuel
may reduce power and fuel efficien-
cy as winter grade fuel has a lower
BTU (heat content) rating. Check
the grade of fuel being used before
troubleshooting for low power com-
plaints in cold weather operation.
In all cases, fuel quality and fuel
sulfur content must comply with all
existing emissions regulation for the
area in which the engine operates.
11
Oil viscosity
Use seasonal grade viscosity
engine oil based on the expected
air temperature range between oil
changes.
Follow the diagram below to adapt
the oil viscosity:
As an option, some engines are
available with an air intake hea-
ter to aid cold weather starting.
Contact your Nanni dealer for more
informations.
o
o
50 C
122 F
o
o
40 C
104 F
o
30 C
o
86 F
o
20 C
o
68 F
10 C
o
50 F
o
o
o
0 C
32 F
o
o
14 F
-10 C
-20 C
o
-4 F
o
o
o
-30 C
-22 F
o
o
-40 C
-40 F
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