Cooling System Overview; Coolant Strength - Polaris ACE 900 2017 Service Manual

COOLING SYSTEM OVERVIEW

The engine coolant level is controlled, or maintained, by
the recovery system. The recovery system components
are the recovery bottle, radiator filler neck, radiator
pressure cap and connecting hose.
As coolant operating temperature increases, the
expanding (heated) excess coolant is forced out of the
radiator past the pressure cap and into the recovery
bottle. As engine coolant temperature decreases the
contracting (cooled) coolant is drawn back up from the
bottle, past the pressure cap, and into the radiator.
NOTICE
Some coolant level drop on new vehicles is normal as
the system is purging itself of trapped air. Observe
coolant level often during break-in period.
CAUTION
Overheating of engine could occur if air is not fully
purged from system.
Polaris recommends the use of Polaris 50/50 Extended
Life Antifreeze or a 50/50 mixture of high quality
aluminum compatible anti-freeze/coolant and distilled
water.
NOTICE
Polaris 50/50 Extended Life Antifreeze is already
premixed and ready to use. Do not dilute with water.
9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.

COOLANT STRENGTH

Test the strength of the coolant using an antifreeze
hydrometer.
• A 50/50 mixture of antifreeze and distilled water will
provide the optimum cooling, corrosion protection, and
antifreeze protection.
• Do not use tap water, straight antifreeze or straight
water in the system. Tap water contains minerals and
impurities which build up in the system.
• Straight water or antifreeze may cause the system to
freeze, corrode, or overheat.
Recommended Coolant:
Polaris 50/50 Extended Life Anti-freeze
2880514 (quart)
2880513 (gallon)
MAINTENANCE
2
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