Front/Rear Axle Fluid; Transfer Case; Manual Transmission - If Equipped - Jeep WRANGLER 2023 Owner's Manual

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expected to fall as the brake pads wear. Brake fluid
level should be checked when pads are replaced. If the
brake fluid is abnormally low, check the system for
leaks
page 363.
WARNING!
Use only the manufacturer recommended brake
fluid
page 363. Using the wrong type of brake
fluid can severely damage your brake system
and/or impair its performance. The proper type of
brake fluid for your vehicle is also identified on the
original factory installed hydraulic master cylinder
reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that has
been in a tightly closed container. Keep the master
cylinder reservoir cap secured at all times. Brake
fluid in an open container absorbs moisture from
the air resulting in a lower boiling point. This may
cause it to boil unexpectedly during hard or pro-
longed braking, resulting in sudden brake failure.
This could result in a collision.
Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing
the brake fluid to catch fire. Brake fluid can also
damage painted and vinyl surfaces, care should be
taken to avoid its contact with these surfaces.
Do not allow petroleum-based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake fail-
ure. This could result in a collision.

FRONT/REAR AXLE FLUID

For normal service, periodic fluid level checks are not
required. When the vehicle is serviced for other reasons
the exterior surfaces of the axle assembly should be
inspected. If gear oil leakage is suspected inspect the
fluid level.
Fluid Level Check
Lubricant should be approximately 1/8 inch (3 mm)
below the bottom edge of the oil fill hole.
NOTE:
Make sure that the vehicle is level and supported by
the axles.
Adding Fluid
Add lubricant only at the fill hole and only to the level
specified above.
Selection Of Lubricant
Use only manufacturer recommended fluid
page 363.

TRANSFER CASE

Fluid Level Check
The fluid level should be to the bottom edge of the fill
hole when the vehicle is in a level position.
SERVICING AND MAINTENANCE
Transfer Case
1 — Fill hole
2 — Drain hole
Drain And Refill
For the proper maintenance intervals
Selection Of Lubricant
Use only the manufacturer recommended fluid
page 363.
MANUAL TRANSMISSION —
IF EQUIPPED
Fluid Level Check
Check the fluid level by removing the fill plug. The fluid
level should be between the bottom of the fill hole and
a point not more than 3/16 of an inch (4.76 mm) below
the bottom of the hole.
Add fluid, if necessary, to maintain the proper level.
319
page 295.
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