Jeep WRANGLER 4Xe 2022 Manual page 66

64 SERVICING AND MAINTENANCE
Cooling System — Drain, Flush And Refill
NOTE:
Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly
could lead to severe internal engine or electrical
system damage. If any coolant is needed to be
added to the system please contact an authorized
dealer.
If the engine coolant (antifreeze) is dirty or
contains visible sediment, have an authorized
dealer clean and flush with OAT coolant
(conforming to MS.90032).
For proper maintenance intervals Ú page 59.
Electric/Battery Coolant System
These coolant systems must be serviced by an
authorized dealer. If the coolant level is below what
is specified on the reservoir, contact an authorized
dealer for service.
These systems require the use of high purity water,
such as deionized, or distilled water, when mixing
the water and coolant (antifreeze) solution. The
use of lower quality water will reduce the amount
of corrosion protection in the cooling systems. If
the coolant level of the battery coolant system is
low, the Hybrid Electric Vehicle System Service
Light will be illuminated on the instrument cluster.
Selection Of Coolant
For further information Ú page 78.
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. OAT
engine coolant is different and should not be
mixed with Hybrid Organic Additive Technology
(HOAT) engine coolant or any "globally compat-
ible" coolant. If a non-OAT engine coolant is
introduced into the cooling system in an emer-
gency, the cooling system will need to be
drained, flushed, and refilled with fresh OAT
coolant (conforming to MS.90032), by an
authorized dealer as soon as possible.
Do not use water alone or alcohol-based engine

coolant products. Do not use additional rust
inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant
and may plug the radiator.
This vehicle has not been designed for use with

propylene glycol-based engine coolant. Use of
propylene glycol-based engine coolant is not
recommended.
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.
Adding Coolant
Your vehicle has been built with an improved
coolant (OAT coolant conforming to MS.90032)
that allows extended maintenance intervals. This
coolant (antifreeze) can be used up to ten 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
coolant (OAT coolant conforming to MS.90032)
throughout the life of your vehicle.
Please review these recommendations for using
Organic Additive Technology (OAT) coolant that
meets the requirements of the manufacturer
Material Standard MS.90032. When adding
coolant:
We recommend using Mopar® Antifreeze/

Coolant 10 Year/150,000 Mile (240,000 km)
Formula OAT that meets the requirements of the
manufacturer Material Standard MS.90032.
Mix a minimum solution of 50% OAT coolant

that meets the requirements of the manufac-
turer Material Standard MS.90032 and deion-
ized, or distilled water. Use higher
concentrations (not to exceed 70%) if tempera-
tures below −34°F (−37°C) are anticipated.