Jeep Wrangler: Cooling System / Adding Coolant
Your vehicle has been built with an improved
engine coolant (OAT coolant conforming to MS.90032) that allows extended
maintenance
intervals. This engine coolant (antifreeze) can
be used up to 10 years or 150,000 miles
(240,000 km) before replacement. To prevent
reducing this extended maintenance period, it
is important that you use the same engine
coolant (OAT coolant conforming to MS.90032)
throughout the life of your vehicle.
Please review these recommendations for
using Organic Additive Technology (OAT) engine
coolant that meets the requirements of the
manufacturer Material Standard MS.90032.
When adding engine coolant (antifreeze):
- We recommend using Mopar® Antifreeze/
Coolant 10 Year/150,000 Mile (240,000 km)
Formula OAT (Organic Additive Technology)
that meets the requirements of the manufacturer
Material Standard MS.90032.
- Mix a minimum solution of 50% OAT engine
coolant that meets the requirements of the
manufacturer Material Standard MS.90032
and distilled water. Use higher concentrations
(not to exceed 70%) if temperatures
below −34°F (−37°C) are anticipated.
Please contact an authorized dealer for
assistance.
- Use only high purity water such as distilled or
deionized water when mixing the water/engine coolant solution. The use of
lower
quality water will reduce the amount of corrosion
protection in the engine cooling system.
NOTE:
- It is the owner's responsibility to maintain the
proper level of protection against freezing
according to the temperatures occurring in
the area where the vehicle is operated.
- Some vehicles require special tools to add
coolant properly. Failure to fill these systems
properly could lead to severe internal engine
damage. If any coolant is needed to be added
to the system, please contact an authorized
dealer.
- Mixing engine coolant types is not recommended
and can result in cooling system
damage. If HOAT and OAT coolant are mixed
in an emergency, have an authorized dealer
drain, flush, and refill with OAT coolant
(conforming to MS.90032) as soon as
possible.
NOTE:
Mixing of engine coolant (antifreeze) other
than specified Organic Additive Technology
(OAT) engine coolant, may result in engine
damage and may decrease corrosion protection...
The cap must be fully tightened to prevent loss
of engine coolant (antifreeze), and to ensure
that engine coolant will return to the radiator
from the coolant expansion bottle/recovery
tank if so equipped...
Other information:
When off-road driving, shift into 4WD Low for
additional traction and control on slippery or
difficult terrain, ascending or descending steep
hills, and to increase low speed pulling power.
This range should be limited to extreme
situations such as deep snow, mud, steep
inclines, or sand where additional low speed
pulling power is needed...
The lower anchorages are round
bars
that are found at the rear of the seat
cushion where it meets the seatback.
They are just visible when you lean
into the rear seat to install the child restraint.
You will easily feel them if you run your finger
along the gap between the seatback and seat
cushion...