See the engine manufacturer’s operation manual for
starting aids that are approved for specific engines.
Starting After Extended
Shutdown or Oil Change
Before engine start-up, complete the engine pretrip
and post-trip inspections and maintenance proce-
dures in
NOTICE
Failure to eliminate water-diluted lubricating oil
may lead to serious engine damage at startup.
An engine in storage for an extended period of time
(over winter, for example) may accumulate water in
the oil pan through normal condensation of moisture
on the internal surfaces of the engine. Oil diluted by
water cannot provide adequate bearing protection at
start-up. For this reason, change the engine oil and
filters after extended storage.
Engine Break-In
Each engine must pass a full-load operating test on
a dynamometer before shipment, thereby eliminating
the need for a break-in. Before running the engine
for the first time, follow the instructions in the engine
manufacturer’s operation manual specific to your en-
gine.
Engine Operation
Safety and Environmental
Considerations
All Freightliner diesel engines comply with the re-
quirements of the Federal (U.S.) Clean Air Act. Once
an engine is placed in service, the responsibility for
meeting local jurisdictional regulations is with the
owner/operator.
IMPORTANT: EPA emissions regulations apply
to vehicles domiciled in Canada and the U.S. at
the time of printing this manual. Vehicles that
are domiciled outside of the U.S. and Canada
may not have engines with an emission after-
treatment system that is compliant with EPA
regulations, depending upon local statutory
emissions guidelines.
NOTICE
It is extremely important that the following guide-
lines be followed for vehicles with EPA07 or
newer engines, or damage may occur to the af-
tertreatment device, and the warranty may be
compromised.
•
Use ultralow-sulfur diesel with 15 ppm sul-
fur content or less.
•
Do not use fuel blended with used engine
lube oil or kerosene.
•
Use only engine lube oil with a sulfated ash
level less than 1.0 wt %; currently referred
to as CJ-4 oil.
A Top Tier
™
compliant fuel is recommended. Look for
the symbol that denotes a Top Tier compliant fuel;
see
Adequate maintenance of the engine and the diesel
particulate filter (DPF) are the responsibility of the
owner/operator, and are essential to keep the emis-
sion levels low. Good operating practices, regular
maintenance, and correct adjustments are factors
that will help keep emissions within the regulations.
Normal Operation
WARNING
Do not operate the engine in an area where flam-
mable vapors such as gasoline or diesel fumes
are present. Shut off the engine when in an area
where flammable liquids or gases are being
handled. Failure to observe these precautions
could result in serious injury or death.
Every engine has an operating range in which it per-
forms most efficiently. The operating range extends
from maximum torque rpm at the low end, to engine
rated speed at the high end. Most engines deliver
best fuel economy when operated in the low- and
mid-speed segments of the efficiency range and pro-
duce maximum horsepower at rated speed, which is
f470698
04/27/2017
Fig. 7.15, Top Tier Fuel Symbol
Engines
7.9
