Jeep Patriot 2011 Operating Information Manual page 210

Cooling System – Drain, Flush and Refill
Refer to the "Maintenance Schedule" for the
proper maintenance intervals.
If the engine coolant (antifreeze) is dirty or
contains a considerable amount of sediment,
clean and flush with a reliable cooling system
cleaner. Follow with a thorough rinsing to re-
move all deposits and chemicals. Properly dis-
pose of old engine coolant (antifreeze).
Selection Of Coolant
Refer to "Fluids, Lubricants, and Genuine
Parts" in "Maintaining Your Vehicle" for further
information.
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CAUTION!
• Mixing of engine coolant (antifreeze) other
than specified Hybrid Organic Additive
Technology (HOAT) engine coolant (anti-
freeze), may result in engine damage and
may decrease corrosion protection. If a
non-HOAT engine coolant (antifreeze) is
introduced into the cooling system in an
emergency, it should be replaced with the
specified engine coolant (antifreeze) as
soon as possible.
• Do not use water alone or alcohol based
engine coolant (antifreeze) 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 cool-
ant (antifreeze). Use of Propylene Glycol
based engine coolant (antifreeze) is not
recommended.
Adding Coolant
Your vehicle has been built with an improved
engine coolant (antifreeze) that allows ex-
tended maintenance intervals. This engine
coolant (antifreeze) can be used up to five
years or 105,000 miles (168 000 km) before
replacement. To prevent reducing this ex-
tended maintenance period, it is important that
you use the same engine coolant (antifreeze)
throughout the life of your vehicle. Please re-
view these recommendations for using Hybrid
Organic Additive Technology (HOAT) engine
coolant (antifreeze).
When adding engine coolant (antifreeze), a
minimum solution of 50% recommended
MOPAR Antifreeze/Coolant
Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology), or equivalent, in
water should be used. Use higher concentra-
tions (not to exceed 70%) if temperatures be-
low 34°F ( 37°C) are anticipated.
Use only high purity water such as distilled or
deionized water when mixing the water/engine
coolant (antifreeze) solution. The use of lower
quality water will reduce the amount of corro-
sion protection in the engine cooling system.
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