2021 JEEP WRANGLER UNLIMITED engine

231
Automatic Transmission
Selection Of Lubricant
It is important to use the proper transmission
fluid to ensure optimum transmission perfor-
mance and life. Use only the manufacturer's
specified transmission fluid. Refer to “Fluids
And Lubricants” in “Technical Specifica -
tions” for fluid specifications. It is important
to maintain the transmission fluid at the
correct level using the recommended fluid.
NOTE:
No chemical flushes should be used in any
transmission; only the approved lubricant
should be used.
Special Additives
The manufacturer strongly recommends
against using any special additives in the
transmission. Automatic Transmission Fluid
(ATF) is an engineered product and its
performance may be impaired by supple -
mental additives. Therefore, do not add any
fluid additives to the transmission. Avoid
using transmission sealers as they may
adversely affect seals.
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 a open container absorbs moisture
from the air resulting in a lower boiling
point. This may cause it to boil unexpect -
edly during hard or prolonged 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 failure. This
could result in a collision.
WARNING! (Continued)
CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may
cause deterioration in transmission shift
quality and/or torque converter shudder.
Refer to “Fluids And Lubricants” in
“Technical Specifications” for fluid
specifications.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage
your transmission components. Such
damage is not covered by the New Vehicle
Limited Warranty.
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247
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION
NUMBER

The Vehicle Identification Number (VIN) is
found on the left front corner of the A pillar,
visible from outside of the vehicle through the
windshield. This number also appears under-
body, on the right side of the frame rail near the
center of the vehicle, as well as on the Automo-
bile Information Disclosure Label affixed to a
window on your vehicle. Save this label for a
convenient record of your vehicle identification
number and optional equipment.

The VIN is also stamped on either right or left
hand side of the engine block.
Vehicle Identification Number
NOTE:
It is illegal to remove or alter the VIN plate.
WHEEL AND TIRE TORQUE
SPECIFICATIONS
Proper lug nut/bolt torque is very important
to ensure that the wheel is properly mounted
to the vehicle. Any time a wheel has been
removed and reinstalled on the vehicle, the
lug nuts/bolts should be torqued using a
properly calibrated torque wrench using a
high quality six sided (hex) deep wall socket.
Torque Specifications
**Use only authorized dealer recommended
lug nuts/bolts and clean or remove any dirt or
oil before tightening.
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion
or loose particles. Spare Tire Torque Specifications
**Use only authorized dealer recommended
lug nuts/bolts and clean or remove any dirt or
oil before tightening.
Spare tire torque is for the spare tire carrier
located on the tailgate.
Lug Nut/Bolt
Torque
**Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
130 Ft-Lbs
(176 N·m) M14 x 1.50 22 mm
Lug Nut/Bolt
Torque**Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
59 Ft-Lbs
(80 N·m) M14 x 1.50 22 mm
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TECHNICAL SPECIFICATIONS
248
Tighten the lug nuts/bolts in a star pattern
until each nut/bolt has been tightened twice.
Ensure that the socket is fully engaged on
the lug nut/bolt (do not insert it halfway).Torque Patterns
After 25 miles (40 km), check the lug nut/
bolt torque to be sure that all the lug nuts/
bolts are properly seated against the wheel.WHEELS
Refer to the tire placard label located on the
door sill of the vehicle or to the Registration
Document for the tire size and pressure.
Refer to “Tires” in “Servicing And Mainte -
nance” chapter for further information.
WEIGHTS
For further information refer to “Vehicle
Loading” in the “Starting And Operating”
chapter.
FUEL REQUIREMENTS —
GASOLINE ENGINE
2.0L Engine
This engine is designed to meet all emission
regulations, and provide satisfactory fuel
economy and performance when using
high-quality unleaded gasoline with a recom -
mended RON of 95.
While operating on gasoline with the
required octane number, hearing a light
knocking sound from the engine is not a
cause for concern. However, if the engine is
heard making a heavy knocking sound, see
your dealer immediately. Use of gasoline
with a lower than recommended octane
number can cause engine failure and may
void or not be covered by the New Vehicle
Limited Warranty.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita -
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle.
WARNING!
To avoid the risk of forcing the vehicle off
the jack, do not tighten the lug nuts/bolts
fully until the vehicle has been lowered.
Failure to follow this warning may result in
personal injury.
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249
3.6L Engine
This engine is designed to meet all emissions
regulations and provide excellent fuel
economy and performance when using
high-quality unleaded gasoline with a
minimum Research Octane Number (RON)
of 91.
Light spark knock at low engine speeds is not
harmful to your engine. However, continued
heavy spark knock at high speeds can cause
damage, and immediate service is required.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita-
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle. Besides using unleaded gasoline with the
proper octane rating, gasolines that contain
detergents, corrosion and stability additives
are recommended. Using gasolines that have
these additives may help improve fuel
economy, reduce emissions, and maintain
vehicle performance.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita
-
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle.
Materials Added To Fuel
Indiscriminate use of fuel system cleaning
agents should be avoided. Many of these
materials intended for gum and varnish
removal may contain active solvents or
similar ingredients. These can harm fuel
system gasket and diaphragm materials.
Fuel Icon Identification Compliant To
EN16942
The following symbols make it easier to
recognize the correct type of fuel to be used
on your vehicle. Before proceeding with the
supply, check the symbols placed inside the
fuel filler flap (if present) and compare them
with the symbol on the fuel pump (if
present).
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251
FUEL REQUIREMENTS —
DIESEL ENGINE
Use good quality diesel fuel from a reputable
supplier. If the outside temperature is very
low, the diesel fuel thickens due to the
formation of paraffin clots with consequent
defective operation of the fuel supply
system.
In order to avoid these problems different
types of fuel are distributed according to the
season: summer type, winter type and arctic
type (cold/mountain areas). If fueling with
diesel fuel whose features are not suitable
for the temperature of use, it is advisable to
mix in a suitable additive with the fuel. With
the proportions shown on the container, pour
the additive in the tank before fueling.
When using or parking the vehicle for a long
time in the mountains or cold areas, it is
advisable to refuel using locally available
fuel. In this case, it is also advisable to keep
the tank over half full.
This vehicle must only use premium diesel
fuel that meets the requirements of EN 590.
Biodiesel blends up to 7% that meet EN
590 may also be used.Diesel fuel is seldom completely free of
water. To prevent fuel system trouble, drain
the accumulated water from the fuel/water
separator using the provided fuel/water
separator drain. If you buy good quality fuel
and follow the cold weather advice above,
fuel conditioners should not be required in
your vehicle. If available in your area, a high
cetane “premium” diesel fuel may offer
improved cold-starting and warm-up perfor
-
mance.
Fuel Icon Identification Compliant To
EN16942
The following symbols make it easier to
recognize the correct type of fuel to be used
on your vehicle. Before proceeding with the
supply, check the symbols placed inside the
fuel filler flap (if present) and compare them
with the symbol on the fuel pump (if
present).
WARNING!
Do not use alcohol or gasoline as a
fuel-blending agent. They can be unstable
under certain conditions and hazardous or
explosive when mixed with diesel fuel.
CAUTION!
The manufacturer requires that you must
fuel this vehicle with Ultra Low Sulfur
Highway Diesel fuel (15 ppm Sulfur
maximum) and prohibits the use of Low
Sulfur Highway Diesel fuel.
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253
FLUID CAPACITIES
USMetric
Fuel (Approximate)
Two Door Models 17.5 Gallons66 Liters
Four Door Models 21.5 Gallons81 Liters
AdBlue® Fluid Tank 5 Gallons19 Liters
Engine Oil with Filter
2.0L Gasoline Engine (API SN PLUS certified SAE 5W-30,
FCA Material Standard MS-13340) 5 Quarts
4.73 Liters
3.6L Gasoline Engine (SAE 0W-20, FCA Material Standard MS-6395) 5 Quarts4.73 Liters
2.2L Diesel Engine (SAE 0W-30 - FCA Material Standard 9.55535-DS1 and ACEA C2) 5 Quarts4.73 Liters
Cooling System *
2.0L Gasoline Engine (OAT FCA Material Standard MS.90032) 10.3 Quarts9.7 Liters
2.0L Gasoline Engine Intercooler (OAT FCA Material Standard MS.90032) 3.2 Quarts3.0 Liters
3.6L Gasoline Engine (OAT FCA Material Standard MS.90032) 11.2 Quarts10.6 Liters
2.2L Diesel Engine (OAT FCA Material Standard MS.90032) 10.1 Quarts9.54 Liters
2.2L Diesel Engine Intercooler (OAT FCA Material Standard MS.90032) 3.1 Quarts2.92 Liters
* Includes coolant recovery bottle filled to MAX level.
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TECHNICAL SPECIFICATIONS
254
FLUIDS AND LUBRICANTS
Engine
Your vehicle is equipped with an engine oil that has been thoroughly developed and tested in order to meet the requirements of the Scheduled
Servicing Plan. Constant use of the prescribed lubricants guarantees the fuel consumption and emission specifications. Lubricant quality is
crucial for engine operation and duration. If lubricants conforming to the specific request are not available, products that meet the indicated
specifications can be used to top up, in this case optimal performance of the engine is not guaranteed.
ComponentFluid, Lubricant, or Genuine Part
Eng

ine Coolant We recommend you use PARAFLU UP Formula OAT (Organic Additive
Technology) or equivalent meeting the requirements of FCA Material
Standard MS.90032.
Intercooler – If Equipped We recommend you use PARAFLU
UP Formula OAT (Organic Additive
Technology) or equivalent meeting the requirements of FCA Material
Standard MS.90032.
Engine Oil — 2.0L Gasoline Engine We recommend you use SELENIA K POWER PLUS, or equivalent, API SN
PLUS Certified SAE 5W-30 Full Synthetic Engine Oil, meeting the
requirements of FCA Material Standard MS-13340. If SN PLUS or
equivalent oil is unavailable then use SELENIA DIGITEK PE, or equivalent,
SAE 0W-30 ACEA C2/API SN Full Synthetic Engine Oil, meeting the
requirement of FCA Material Standard 9.55535-GS1.
CAUTION!
Failure to use the recommended SN PLUS or equivalent oil can cause engine
damage not covered by the vehicle warranty.
Engine Oil — 3.6L Gasoline Engine We recommend you use SELENIA K POWER 0W-20, or equivalent, 0W-20
Engine Oil, meeting the requirements of FCA Material Standard MS-6395.
Refer to your engine oil filler cap for correct SAE grade.
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255
Engine Oil — 2.2L Diesel EngineFor best performance and maximum protection under all types of operating
conditions, the manufacturer recommends SELENIA WR FORWARD engine
oils, or equivalent, SAE 0W-30 ACEA C2 that meet the requirements of FCA
Material Standard 9.55535- DS1 and ACEA C2.
NOTE:
If lubricants compliant with the required specifications are not available,
products that comply with the minimum required characteristics (SAE
grade and ACEA classification) can be used for topping off; in this case
optimal performance of the engine is not guaranteed.
The use of products with specifications other than those indicated above
could cause damage to the engine not covered by the warranty.
Engine Oil Filter We recommend you use Mopar Engine Oil Filter or equivalent.
Spark Plugs We recommend you use Mopar Spark Plugs or equivalent.
Fuel Selection — 2.0L Gasoline Engine Minimum 95 Research Octane Number (RON) (EN228 Specifications)
Fuel Selection — 3.6L Gasoline Engine Minimum 91 Research Octane Number (RON) (EN228 Specifications)
Fuel Selection — 2.2L Diesel Engine Diesel For Motor Vehicles (Specification EN590)
Additive For Diesel Emissions AdBlue® (UREA) AdBlue® (Urea-Water Solution) According To DIN 70 070 and ISO 22241-1
ComponentFluid, Lubricant, or Genuine Part
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