Replenishing Supplemental Coolant Additives (SCAs) Between Coolant Changes

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Add Supplemental Coolant Additive

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Check Glycol Concentration

IMPORTANT: ALWAYS maintain coolant at correct level and concentration. DO NOT operate engine without coolant for even a few minutes.

If frequent coolant make-up is required, the glycol concentration should be checked with JT07298 Coolant/Battery Tester to ensure that the desired freeze point is maintained. Follow manufacturer's instructions provided with refractometer.

Through time and use, original additives eventually lose their effectiveness and must be recharged with additional supplemental coolant additives available in the form of liquid coolant conditioner. Add the manufacturer's recommended concentration of supplemental coolant additive. DO NOT add more than the recommended amount.

Maintaining the correct coolant conditioner concentration (SCAs) and freeze point is essential in your cooling system to protect against liner pitting, corrosion, and freeze-ups due to incorrect coolant dilution.

Test the coolant solution at 12 months or 25,000 miles using either John Deere coolant test strips or a CoolScan® analysis. If a CoolScan® analysis is not available, recharge system per instructions printed on label of TY16004 or TY16005 John Deere Liquid Coolant Conditioner. ALWAYS follow the manufacturer's recommendations printed on the container label.

IMPORTANT: TY16004 or TY16005 Liquid Coolant Conditioner is a non-chromate inhibitor and should be used only with low silicate, ethylene glycol based antifreeze. It does not protect the cooling system from freezing.

Do not add a supplemental coolant additive when the cooling system is drained and refilled with John Deere COOL-GARD.

See ENGINE COOLANT SPECIFICATIONS earlier in Fuels, Lubricants, and Coolants Section for proper mixing of coolant ingredients before adding to the cooling system.