Maintenance
9-20
Recommended coolant
•  When adding coolant, use only 
deionized water, distilled water or soft 
water for your vehicle and never mix 
hard water in the coolant filled at the 
factory.
•  An incorrect coolant mixture can 
result in severe malfunction or engine 
damage.
•  The engine in your vehicle has 
aluminum engine parts and must be 
protected by an phosphate-based 
ethylene glycol coolant to prevent 
corrosion and freezing.
•  Do not use alcohol or methanol 
coolant or mix them with the specified 
coolant.
•  Do not use a solution that contains 
more than 60% antifreeze or less than 
35% antifreeze, which would reduce 
the effectiveness of the solution.
For mixing percentage, refer to the 
following table:
Ambient 
Temperature
Mixture Percentage 
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
 Information
If in doubt about the mix ratio, a 50% 
water and 50% antifreeze mix is the 
easiest to mix together as it will be the 
same quantity of each. It is suitable to 
use for most temperature ranges of -31°F 
(-35°C) and higher.
Changing Coolant
Have coolant be changed by an 
authorized retailer of Genesis Branded 
products according to the Maintenance 
Schedule at the beginning of this 
chapter.
 WARNING
Do not use engine coolant or antifreeze 
in the washer fluid reservoir.
Engine coolant can severely obscure 
visibility when sprayed on the 
windshield and may cause loss of 
vehicle control resulting in an accident.
Engine coolant may also cause damage 
to paint and body trim.
NOTICE
To prevent damage to engine parts, put 
a thick towel around the engine coolant 
cap and/or inverter coolant cap before 
refilling the coolant to prevent the 
coolant from overflowing into engine 
parts, such as the alternator.