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Some coolant additives will gradually deplete during engine operation. For John Deere COOL-GARD
™
II Premix and COOL-GARD II Concentrate, replenish coolant additives between drain intervals by adding John Deere COOL-GARD II COOLANT EXTENDER.
John Deere COOL-GARD II COOLANT EXTENDER should not be added unless indicated by coolant testing.
John Deere COOL-GARD II COOLANT EXTENDER is a chemically matched additive system approved for use with John Deere COOL-GARD II coolants in all John Deere engines.
John Deere COOL-GARD II COOLANT EXTENDER is not designed for use with John Deere COOL-GARD coolants.
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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
John Deere COOL-GARD PG
The use of non-recommended supplemental coolant additives may result in additive drop-out, gelation of the coolant, or corrosion of cooling system components.
Add the recommended concentration of John Deere COOL-GARD II COOLANT EXTENDER. DO NOT add more than the recommended amount.
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