STARTING and OPERATING
4
WARNING!
Exhaust fumes from the engine con-
tain carbon monoxide, a colorless and
odorless gas. A poorly maintained,
damaged, or corroded exhaust system
can allow carbon monoxide to enter
the cab or sleeper. Failure to prop
-
erly maintain your vehicle could cause
carbon monoxide to enter the cab and
cause death or personal injury.
Never idle your vehicle for prolonged
periods of time if you sense that ex
-
haust fumes are entering the cab. In-
vestigate the cause of the fumes and
correct it as soon as possible. If the ve
-
hicle must be driven under these con-
ditions, drive only with the windows
slightly open. Failure to repair the
source of the exhaust fumes may lead
to death or personal injury.
WARNING!
CAUTION
The use of a winterfront can result
in excessive engine coolant, oil, and
charge air (intake) temperatures,
which can lead to overheating and
possible engine damage. If you must
use a winterfront:
• Refer to
the “Engine Operation
and Maintenance Manual”
for operating restrictions and
recommendations.
• Use only
a winterfront available
from your dealer that is
compatible with an EPA-compliant
engine cooling system. These
winterfronts are specically
designed for use with new grill
snap patterns.
NOTE
Keep the engine exhaust system and
the vehicle’s cab/sleeper ventilation
system properly maintained. It is rec
-
ommended that the vehicle’s exhaust
system and cab/sleeper be inspected:
• By a competent technician every
15,000 miles,
• Whenever a
change is noticed in
the sound of the exhaust system,
• Whenever the
exhaust system,
underbody, cab or sleeper is
damaged.
4-8 Y53-6047–2C (04/13)