HOW-TO SECTION
Cold Weather Starting
At ambient temperatures below –4
°F (–20 °C) when suf
fi
cient starter
speed cannot be achieved with SAE
15W-40 oils, the use of 5W-XX oils
and 10W-XX oils, where XX is 30 or
40, is allowed to improve startability,
provided they are API CI-4
or
API
CI-4 or CH-4 and have demonstrated
fi
eld performance in DDC engines.
These oils must possess a HT/HS of
3.7 minimum.
NOTICE:
Monograde oils should not
be used in Series 40 engines,
regardless of API service
classi
fi
cation.
Monograde oils
gel at lower ambient temperatures,
reducing lubricant flow, and
they do not provide adequate
lubricity at higher engine operating
temperatures. These factors can
result in severe engine damage.
When the use of high sulfur fuel
(greater than 0.05% mass sulfur) is
unavoidable, high alkalinity (TBN)
lubricants are recommended. High
sulfur fuels require modi
fi
cation
to oil drain intervals. For further
information, refer to publication
Engine Requirements – Lubricating
Oil, Fuel and Filters
, 7SE270,
available from authorized Detroit
Diesel distributors.
The Use of Supplemental
Additives
Lubricants meeting the Detroit
Diesel speci
fi
cations outlined in this
publication already contain a balanced
additive treatment. Supplemental
additives are generally not necessary
and can even be harmful. These
additives may be marketed as either
oil treatments or engine treatments
and are discouraged from use in
Detroit Diesel engines.
Engine
damage resulting from the use of
such materials is not covered by
your Detroit Diesel Corporation
warranty.
Detroit Diesel will not
provide statements beyond this
publication relative to their use.
74
All information subject to change without notice.
(Rev. May 2004)
DDC-SVC-MAN-0057 0305
Copyright © 2003 DETROIT DIESEL CORPORATION