Engine Block Heater - If Equipped; Engine Break-In Recommendations; Gasoline Engine (If Equipped) - Jeep Gladiator 2021 Owner's Manual

Fuel, oil or coolant leaks

Sudden change, outside the normal oper-

ating range, in the engine operating tempera-
ture
Excessive smoke

Oil pressure drop

ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and
permits quicker starts in cold weather. Connect
the cord to a standard 110-115 Volt AC
electrical outlet with a grounded, three-wire
extension cord.
Diesel Engine Block Heater Cord Location
The engine block heater cord is found under the
hood bundled up next to the Power Distribution
Center (PDC).
For diesel engines, its use is recommended for
environments that routinely fall below -10°F
(-23°C). It should be used when the vehicle has
not been running for long periods of time and
should be plugged in two hours prior to start. Its
use is required for cold starts with temperatures
under -20°F (-28°C).
WARNING!
Remember to disconnect the engine block
heater cord before driving. Damage to the
110-115 Volt AC electrical cord could cause
electrocution.
NOTE:
The block heater will require 110 Volts AC and
6.5 Amps to activate the heater element.
ENGINE BREAK-IN RECOMMENDATIONS —

GASOLINE ENGINE (IF EQUIPPED)

A long break-in period is not required for the
engine and drivetrain (transmission and axle) in
your vehicle.
STARTING AND OPERATING
Drive moderately during the first 300 miles
(500 km). After the initial 60 miles (100 km),
speeds up to 50 or 55 mph (80 or 90 km/h) are
desirable.
While cruising, brief full-throttle acceleration
within the limits of local traffic laws contributes
to a good break-in. Wide-open throttle
acceleration in low gear can be detrimental and
should be avoided.
The engine oil installed in the engine at the
factory is a high-quality energy conserving type
lubricant. Oil changes should be consistent with
anticipated climate conditions under which
vehicle operations will occur.
For the recommended viscosity and quality
grades see Ú page 458.
CAUTION!
Never use Non-Detergent Oil or Straight
Mineral Oil in the engine or damage may result.
NOTE:
A new engine may consume some oil during its
first few thousand miles (kilometers) of opera-
tion. This should be considered a normal part of
the break-in and not interpreted as a problem.
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