User Manual - Page 481

For 2019 Wrangler.

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SERVICING AND MAINTENANCE 479
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 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
sedimen
t, have an authorized dealer clean and flush with
OAT coolant (antifreeze) (conforming to MS.90032).
Refer to the “Maintenance Plan” in this section for the proper
mainten
ance intervals.
Selection Of Coolant
Refer to “Fluids And Lubricants” in “Technical Specifica-
tions” for further information.
NOTE:
M
ixing of engine coolant (antifreeze) other than specified
Organic
Additive Technology (OAT) engine coolant (anti-
freeze), may result in engine damage and may decrease
c
orrosi
on protection. Organic Additive Technology (OAT)
engine coolant is different and should not be mixed with
Hybrid Organic Additive Technology (HOAT) engine
coolant (antifreeze) or any globally compatible” coolant
(antifreeze). If a non-OAT engine coolant (antifreeze) is
introduced into the cooling system in an emergency, 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
(antif
reeze) 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-b
ased engine coolant (antifreeze). Use of propylene
glycolbased engine coolant (antifreeze) is not recom
-
mended.
S
ome vehicles require special tools to add coolant prop-
erly. Fa
ilure 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.
7
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