operators_manual

• pH level
• Nitrite level
• Carboxylate level
Checking Coolant Condition
Recommended coolant checks.
T
o ensure the Extended Life Coolant (ELC)
in your vehicle always provides maximum
protection, perform the following tests:
1. Check the coolant color at every
maintenance interval. It
should have no cloudiness, floating
debris, or oils.
2. Test the freeze point at least twice
a year. A refractometer or test
strips can be used to measure the
protection level.
3. Determine the pH and chemical
inhibitor concentration level by
using an ELC-specific test kit or
test strips.
4. Keep the cooling system full by
topping-up using ELC pre-diluted to
a 50/50 blend, unless a different
ratio of water/antifreeze has been
substituted (depending on
operating conditions).
NOTE
Inhibitor concentration level deter-
mines corrosion protection.
If you are
concerned about possible coolant
quality, contamination, or mechanical
problems, submit a coolant sample to
your dealer for analysis. Improper
maintenance may cause coolant deg-
radation and could result in damage to
the cooling system and engine compo-
nents. Consult your dealer or the cool-
ant manufacturer's representative for
recommended extended life coolant
test kits, test strips, and laboratory
sample procedures.
Radiator Hoses
Maintenance checks for radiator hoses.
Perform these maintenance procedures
according to the Preventative Maintenance
Schedule.
1. Check the following radiator hose
conditions:
• Hose condition, deterioration/
signs of leaking.
•
Hose clamp torque.
Replace Coolant Filter
Procedure for removing coolant filter.
Perform these maintenance procedures
according to the Preventative Maintenance
Schedule.
Coolant Shutoff Valve
1. Slowly loosen the radiator cap to
relieve any pressure in the cooling
system.
ENGINE MAINTENANCE - Maintenance Procedures
64 Y53-1181-1K1 (08/2018)
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