Fuel, Oil and Coolant Specifications
and do not contain any or very low concentrations of
Used Lube Oil Analysis Warning Values
zinc ingredients. They are identified by industry as
The presence of ethylene glycol in the oil is damaging
EMD or railroad (RR) oils. They are an approved
to the engine. Its presence and need for an oil change
option for Series 149 engines in all marine applications
and for corrective maintenance action may be confirm-
and for all other model Detroit Diesel engines used for
ed by glycol detector kits which are commercially
auxiliary power in marine service applications.
available.
OIL CHANGES
Oil change intervals are dependent upon the various
Fuel dilution of the oil may result from loose fuel
operating conditions of the engines and the sulfur
connections or from prolonged engine idling. A fuel
content of the diesel fuel used. Oil drain intervals in
dilution exceeding 2.5 percent by volume indicates an
all service applications may be increased or decreased
immediate need for an oil change and corrective
with experience using a specific lubricant, while also
maintenance action. Fuel dilution may be confirmed
considering the recommendations of of the oil supplier.
by ASTM D-322 test procedure performed by oil
Generally, the sulfur content of diesel fuels supplied
suppliers or independent laboratories.
throughout the U.S.A and Canada are low (i.e., less
than 0.5 per cent by weight - ASTM D-129) or D-1552
In addition to the above considerations, if any of the
or D-2622). Fuels distributed in some overseas locations
following occur. the oil should be changed:
may contain higher concentrations of sulfur, the use
of which will require reduced lube oil drain intervals.
1. The viscosity at 100F. of a used oil sample is 40
Highway Trucks & Inter-City Buses
percent greater than the viscosity of the unused
(Series 53, 71, and 92 Naturally Aspirated and Turbo-
oil measured at the same temperature (ASTM
charged Engines)
D-445 and D-2161).
For highway trucks and buses, used for inter-city
operation, the oil change interval is 100,000 miles, The
2 . The iron content is greater than 150 parts per
drain interval may he extended beyond this point if
million.
supported by the results obtained from used lube oil
analysis: it is recommended that you consult with your
lube oil supplier in establishing any drain interval
3. The pentane insolubles (total contamination) ex-
exceeding 100,000 miles.
ceed 1.00 percent by weight (ASTM D-893).
City Transit Coaches and Pick-Up and Delivery Truck
Service (Series 53, 71, and 92 Naturally Aspirated and
4. The total base number (TBN) is less than 1.0
Turbocharged Engines)
(ASTM D-664). Note: The sulfur content of the
diesel fuel used will influence the alkalinity of the
For city transit coaches and pick-up and delivery truck
lube oil. With high sulfur fuels, the oil drain interval
service, the oil change interval is 12,500 miles. The oil
will have to be shortened to avoid excessibe acidity
drain interval may be extended beyond 12,500 miles
in the lube oil.
if supported by used oil analyses.
LUBE OIL FILTER ELEMENT CHANGES
Industrial and Marine
(Series 53, 71, and 92 Naturally Aspirated and Turbo-
Full-Flow Filters
charged Engines)
Series 53, 71, and 92 engines, in industrial and marine
A full-flow oil filtration system is used in all Detroit
service. should he started with 150-hour oil change
Diesel engines. To insure against physical deterioration
periods. The oil drain intervals may he extended if
of the filter element. it should he replaced at a
supported by used oil analyses.
maximum of 25,000 miles for on-highway vehicles or at
each oil change period. whichever occurs first. For all
Large Industrial and Marine
other applications. the filter should be replaced at a
maximum of 500 hours or at each oil change period,
(Series 149 Naturally Aspirated and Turbocharged
Engines)
whichever occurs first.
The recommended oil change period for naturally
aspirated Series 149 engines is 500 hours. while the
By-Pass Filters
change period for turbocharged Series 149 engines is
300 hours. These drain intervals may be extended if
Auxiliary by-pass lube oil fitters are not required on
Detroit Diesel engines.
supported by used oil analyses.
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