User Manual

HOW-TO SECTION
CategoryCG-4maybeusedin
engines built prior to 1998 when API
CI-4 or CH-4 oils are not available.
NOTE:
The use of CG-4 oils in these
engines may require a reduction in
oil drain in terval, depending upon the
application and the fuel sulfur level.
Cold Weather Starting
At ambient temperatures below –20°
C (–4 °F) when sufficient starter
speed cannot be achieved w ith 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 (for
EGR-equipped engines) or API CI-4
or CH-4 (for non-EGR-equipped
engines) and have demonstrated field
performance in DDC engines. These
oils must possess a HT/HS of 3.7
minimum.
NOTICE:
Monograde oils should not
be used in Series 50 engines,
regardless of API service
classification. Monograde oils
gel at lower ambient temperatures,
reducing lubricant flow, and
they do not provide adequate
lubricity at higher engine operating
temperatures. The se factor s can
result in severe engine damage.
NOTE:
Do not use fuel with sulfur content
above0.05masspercentforDetroit
Diesel EGR-equipped engines.
When the use of high sulfur fuel
(greater than 0.05% mass sulfur) in
non-EGR engines is unavoidable,
high alkalinity (TBN) lubricants
are recommended. High sulfur
fuels require modification to
oil drain intervals. For fu rt her
information, refer to publication
Engine Requirements – Lubricating
Oil, Fuel and Filters, 7SE270,
available from authorized Detroit
Diesel distributors.
Synthetic Oils
Synthetic oils may be used in Detroit
Diesel engines, provided they are API
licensed and meet the performance
and chemical requirements of
non-synthetic oils outlined in this
publication. Synthetic oils offer
improved low-tem perat ur e flow
properties and hig h-temperature
oxidation resistance. However,
they are generally more costly than
non-synthetic oils.
Product information about synthetic
oils should be reviewed carefully.
Performance additive systems often
respond differently in synthetic oils.
Their use does not permit extension of
recommended oil drain intervals.
84 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION