Jeep Compass Operating Information Manual page 236

NOTE:
Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (an-
tifreeze) and will require more frequent cool-
ant changes.
Adding Coolant – 2.2L Diesel
Your vehicle has been built with an improved
engine coolant that allows extended mainte-
nance intervals. This coolant can be used up to
five years or 105,000 miles (168 000 km) before
replacement. To prevent reducing this extended
maintenance period, it is important that you use
the same coolant throughout the life of your
vehicle. Please review these recommendations
for using Hybrid Organic Additive Technology
(HOAT) coolant.
When adding coolant:
• The
manufacturer recommends
MOPAR® Antifreeze/Coolant 5 Year/100,000
Mile Formula HOAT (Hybrid Organic Additive
Technology) or equivalent.
• Mix a minimum solution of 50% HOAT engine
coolant and distilled water. Use higher con-
centrations (not to exceed 70%) if tempera-
tures below −34°F (−37°C) are anticipated.
232
• 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 cor-
rosion protection in the engine cooling sys-
tem.
Please note that 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 oper-
ated.
NOTE:
Mixing coolant types will decrease the life of
the engine coolant and will require more
frequent coolant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss
using of engine coolant (antifreeze), and to ensure
that engine coolant (antifreeze) will return to the
radiator from the coolant recovery bottle.
The cap should be inspected and cleaned if
there is any accumulation of foreign material on
the sealing surfaces.
WARNING!
• The warning words "DO NOT OPEN HOT"
on the cooling system pressure cap are a
safety precaution. Never add engine cool-
ant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap
to cool an overheated engine. Heat causes
pressure to build up in the cooling system.
To prevent scalding or injury, do not re-
move the pressure cap while the system is
hot or under pressure.
• Do not use a pressure cap other than the
one specified for your vehicle. Personal
injury or engine damage may result.
Disposal Of Used Engine Coolant
Used ethylene glycol-based engine coolant (an-
tifreeze) is a regulated substance requiring
proper disposal. Check with your local authori-
ties to determine the disposal rules for your
community. To prevent ingestion by animals or
children, do not store ethylene glycol-based
engine coolant (antifreeze) in open containers
or allow it to remain in puddles on the ground. If