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Engine Operation3.5 Operating Conditions
3.5.1 Winter Operation
● Lube Oil Viscosity
– Select the oil viscosity (SAE grade) accord-
ing to the ambient temperature when the
engine is started, see 4.1.2.
– Increase oil change frequency when oper-
ating below -10 °C, see 6.1.1.
● Diesel Fuel
– Use winter-grade diesel fuel for operation
below 0 °C, see 4.2.2.
● Additional Maintenance Work
– Drain the sludge from the fuel tank once a
week. (Unscrew the sludge drain plug)
– If necessary, allow the oil in the oil bath air
cleaner and the engine oil to settle at the
ambient temperature.
– Below -20 °C, after removing the starter if
necessary, smear the ring gear on the fly
wheel via the pinion bore from time to time
with cold-resistant grease.
(e.g. Bosch grease FT 1 V 31).
● Cold-Start Aid
– At temperatures near or below freezing
point, use glow plugs if necessary, see
3.2.1.
This not only lowers the starting limit tem-
perature, but provides easier starting at
temperatures normally not requiring a start-
ing aid.
● Battery
– Efficient cold starting requires a healthy
battery, see 6.7.1.
– The starting limit temperatures can be low-
ered by 4-5 °C by heating the battery up to
about +20 °C . (To do so, remove the battery
and store in a warm place).
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