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Maintaining adequate concentrations of glycol and inhibiting additives in the coolant is critical to protect the engine and cooling system against freezing, corrosion, and cylinder liner erosion and pitting.
Test the coolant solution at intervals of 12 months or less and whenever excessive coolant is lost through leaks or overheating.
Coolant Test Strips
Coolant test strips are available from your John Deere dealer. These test strips provide a simple, effective method to check the freeze point and additive levels of your engine coolant.
When Using John Deere COOL-GARD II
John Deere COOL-GARD
™
II Premix and COOL-GARD II Concentrate are maintenance free coolants for up to 6 years or 6000 hours of operation, provided that the cooling system is topped off using only John Deere COOL-GARD II Premix coolant. 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
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required, add John Deere COOL-GARD II COOLANT EXTENDER as directed.
Add only the recommended concentration of John Deere COOL-GARD II COOLANT EXTENDER. DO NOT add more than the recommended amount.
When Using John Deere COOL-GARD
Compare the test strip results to the supplemental coolant additive (SCA) chart to determine the amount of inhibiting additives in your coolant and whether more John Deere LIQUID COOLANT CONDITIONER should be added.
Add only the recommended concentration of John Deere LIQUID COOLANT CONDITIONER. DO NOT add more than the recommended amount.
CoolScan and CoolScan PLUS
For a more thorough evaluation of your coolant, perform a CoolScan
™
or CoolScan PLUS
™
analysis, where available. See your John Deere dealer for information.
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