Drain Intervals For Diesel Engine Coolant; John Deere Cool-Gard™ Ii Coolant Extender - Worldwide Construction And Forestry Division 380GLC Operator's Manual

Drain Intervals for Diesel Engine Coolant

Drain and flush the cooling system and refill with fresh
coolant at the indicated interval, which varies with the
coolant used.
John Deere COOL-GARD™ II Premix, COOL-GARD
II PG Premix and COOL-GARD II Concentrate are
maintenance free coolants for up to six years or 6000
hours of operation, provided that the cooling system is
topped off using only John Deere COOL-GARD II Premix
or COOL-GARD II PG Premix.
Test the coolant condition annually with Coolant Test
Strips designed for use with John Deere COOL-GARD
II coolants. If the test strip chart indicates that additive
is required, add John Deere COOL-GARD II Coolant
Extender as directed.
COOL-GARD is a trademark of Deere & Company
John Deere COOL-GARD™ II Coolant Extender
Some coolant additives gradually deplete during
engine operation. For COOL-GARD™ II pre-mix and
COOL-GARD II Concentrate, replenish coolant additives
between drain intervals by adding COOL-GARD II Coolant
Extender.
COOL-GARD II Coolant Extender should not be added
unless indicated by COOL-GARD II Test Strips. These
test strips provide a simple, effective method to check the
freeze point, additive levels, and pH of your engine coolant.
Test the coolant solution at intervals of 12 months and
whenever excessive coolant is lost through leaks or
overheating.
IMPORTANT: Do not use COOL-GARD II Test
Strips with COOL-GARD II PG.
COOL-GARD II Coolant Extender is a chemically matched
additive system for use with all COOL-GARD II coolants.
COOL-GARD is a trademark of Deere & Company
Maintenance—Machine
If John Deere COOL-GARD™ II Premix, COOL-GARD II
PG Premix, or COOL-GARD II Concentrate is used, but
the coolant is not tested OR additives are not replenished
by adding John Deere COOL-GARD II Coolant Extender,
the drain interval is four years or 4000 hours of operation.
This drain interval only applies to COOL-GARD II coolants
that have been maintained within a 40—60% mixture of
concentrate with quality water.
If a coolant other than COOL-GARD II, or COOL-GARD
II PG is used, reduce the drain interval to two years or
2000 hours of operation.
COOL-GARD II Coolant Extender is not intended for use
with nitrite-containing coolants.
IMPORTANT: Do not add a supplemental coolant
additive when the cooling system is drained
and refilled with any of the following:
•
John Deere COOL-GARD II
•
John Deere COOL-GARD II PG
The use of non-recommended supplemental coolant
additives can result in additive drop-out, gelation of the
coolant, or corrosion of cooling system components.
Add the recommended concentration of COOL-GARD
II Coolant Extender. DO NOT add more than the
recommended amount.
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