Jeep 2013 Wrangler Owner's Manual page 298

CAUTION!
Do not use chemical flushes in your trans-
mission as the chemicals can damage your
transmission components. Such damage is
not covered by the New Vehicle Limited
Warranty.
Fluid Level Check – 3.6L Engine
It is best to check the fluid level when the
transmission is at normal operating temperature
(approximately 180° F / 82° C). This occurs
after at least 15 miles (25 km) of driving. At
normal operating temperature, the fluid cannot
be held comfortably between the fingertips.
Use the following procedure to check the auto-
matic transmission fluid level properly:
1. Park the vehicle on level ground.
2. Remove the engine cover by pulling it up off
the mounting studs.
3. Run the engine at idle speed and normal
operating temperature.
4. Fully apply the parking brake, and press the
brake pedal.
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5. Place the shift lever momentarily into each
gear position (allowing time for the transmission
to fully engage in each position), ending with the
shift lever in PARK.
6. Remove the dipstick, wipe it clean and rein-
sert it until seated.
7. Remove the dipstick again and note the fluid
level on both sides. The fluid level reading is
only valid if there is a solid coating of oil on both
sides of the dipstick. Note that the holes in the
dipstick will be full of fluid if the actual level is at
or above the hole. The fluid level should be
between the HOT (upper) reference holes on
the dipstick at normal operating temperature. If
the fluid level is low, add fluid through the
dipstick tube to bring it to the proper level. Do
not overfill. Use ONLY the recommended fluid
(see "Fluids, Lubricants, and Genuine Parts" for
fluid specifications). After adding any quantity of
oil through the dipstick tube, wait a minimum of
two minutes for the oil to fully drain into the
transmission before rechecking the fluid level.
NOTE:
If it is necessary to check the transmission
below the operating temperature, the fluid
level should be between the two COLD
(lower) holes on the dipstick with the fluid at
approximately 80° F (27° C). If the fluid level
is correctly established at 80° F (27° C), it
should be between the HOT (upper) refer-
ence holes when the transmission reaches
180° F (82° C). Remember it is best to check
the level at the normal operating tempera-
ture.
CAUTION!
If the fluid temperature is below 50° F (10°
C), it may not register on the dipstick. Do not
add fluid until the temperature is elevated
enough to produce an accurate reading. Run
the engine at idle, in PARK, to warm the fluid.
8. Replace the engine cover and snap it se-
curely onto the mounting studs.