Peterbilt 325 2017, Operator'S Manual, Page: 294 / 392

COOLING SYSTEM
Engine (Block) Heater
WARNING!
Do not use the heater if there are
any signs of problems. Engine block
heaters can cause fires resulting in
death, personal injury, equipment
or property damage if not properly
maintained and operated.
Regu-
larly inspect the engine block heater
wiring and connector for damaged
or frayed wires. Contact your au-
thorized dealer or the manufacturer
of the heater if you are in need of
repairs or information.
Failure to
comply may result in death, per-
sonal injury, equipment or property
damage.
CAUTION
Always unplug the block heater be-
fore starting your engine. Damage
to the cooling system could occur if
not turned OFF (unplugged).
Use a solution of half ethylene glycol
antifreeze and half water for best
heater performance. Do not use
more than 65 percent concentration of
antifreeze, as a shortened heater life
will result.
After servicing the cooling system,
operate the vehicle for a day or two
before using the heater. Trapped
air inside the engine needs time to
escape.
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Y53-6060-1C1 (03/17)
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