Front/Rear Axle Fluid; Fluid Level Check; Adding Fluid- Page 395

2018 Jeep Wrangler JK Owner Manual

Table of Contents

GETTING TO KNOW YOUR VEHICLE
GETTING TO KNOW YOUR INSTRUMENT PANEL
SAFETY
OCCUPANT RESTRAINT SYSTEMS
STARTING AND OPERATING
SERVICING AND MAINTENANCE
MULTIMEDIA
UCONNECT PHONE — IF EQUIPPED
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WARNING!

Use only manufacturer’s recommended brake fluid.
Refer to “Fluids And Lubricants” in “Technical
Specifications” for further information. 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 mois-
ture, use only new brake fluid or fluid that has been
in a tightly closed container. Keep the master cylin-
der reservoir cap secured at all times. Brake fluid in
a open container absorbs moisture from the air
resulting in a lower boiling point. This may cause it
to boil unexpectedly during hard or prolonged brak-
ing, 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.

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WARNING!

(Continued)

Do not allow petroleum based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
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. Refer

to “Fluids And Lubricants” in “Technical Specifications”

for further information.

Fluid Level Check

Lubricant should be at the bottom edge of the oil fill hole.

Adding Fluid

Add lubricant only at the fill hole and only to the level

specified above.

Selection Of Lubricant

Use only the manufacturer’s recommended fluid. Refer to

“Fluids And Lubricants” in “Technical Specifications” for

further information.

8

SERVICING AND MAINTENANCE

393

Detailed Information for 2018 Jeep Wrangler JK Owner Manual

Lists of information found in 2018 Jeep Wrangler JK Owner Manual - Page 395

  • Use only manufacturer’s recommended brake fluid.
  • To avoid contamination from foreign matter or mois- ture, use only new brake fluid or fluid that has been in a tightly closed container.
  • Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts, causing the brake fluid to catch fire.
  • Do not allow petroleum based fluid to contaminate the brake fluid.

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