ENGINE BREAK-IN RECOMMENDATIONS; MANUAL TRANSMISSION — IF EQUIPPED- Page 154

2018 Jeep Wrangler JL User Guide

Table of Contents

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ENGINE BREAK-IN
RECOMMENDATIONS

A long break-in period is not required for the
engine and drivetrain (transmission and axle)
in your vehicle.

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 contrib-
utes 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 consis-
tent with anticipated climate conditions un-
der which vehicle operations will occur. For
the recommended viscosity and quality
grades, refer to “Fluids And Lubricants” in
“Technical Specifications”.

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
operation. This should be considered a nor-
mal part of the break-in and not interpreted
as a problem.

MANUAL TRANSMISSION —
IF EQUIPPED

WARNING!

You or others could be injured if you leave
the vehicle unattended without having the
parking brake fully applied. The parking
brake should always be applied when the
driver is not in the vehicle, especially on
an incline.

CAUTION!

• Never drive with your foot resting on the

clutch pedal, or attempt to hold the
vehicle on a hill with the clutch pedal
partially engaged, as this will cause ab-
normal wear on the clutch.

• Do not drive with your hand resting on

the gear selector as the force exerted,
even if slight, could lead over time to
premature wear of the gearbox internal
components.

NOTE:

During cold weather, you may experience
increased effort in shifting until the transmis-
sion fluid warms up. This is normal.

ST

ARTING

AND

OPERA

TING

152

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  • Never drive with your foot resting on the clutch pedal, or attempt to hold the vehicle on a hill with the clutch pedal partially engaged, as this will cause ab- normal wear on the clutch.
  • Do not drive with your hand resting on the gear selector as the force exerted, even if slight, could lead over time to premature wear of the gearbox internal components.

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