REFERENCE ONLY 140497 PN=32 In tropical areas where antifreeze or John Deere Engine COOL-GARD is not available, it is acceptable to use water meeting the quality specifications on the previous page and John Deere Liquid Coolant Conditioner. The recommended concentration of John Deere Liquid Coolant Conditioner must be doubled to 6% (60 mL per Liter of cooling system capacity) by volume when used with water only (no antifreeze). Additives eventually lose their effectiveness and must be recharged with additional liquid coolant conditioner. See label on container for recommended service intervals and concentration rates.
See REPLENISHING SUPPLEMENTAL COOLANT ADDITIVES (SCA'S) BETWEEN COOLANT CHANGES, later in this section. RG .COOL.162932 -19-1SJUN94 IMPORTANT: John Deere Liquid Coolant Conditioner does NOT protect against freezing. Contact your authorized servicing dealer or engine distributor, if there are further questions. Fuels, Lubricants, and Coolant ENGINE COOLANT SPECIFICATIONS-CONTINUED 24 IMPORTANT: DO NOT over-inhibit antifreeze solutions, as this can cause silicate-dropout. When this happens, a gel-type deposit is created which retards heat transfer and coolant flow. NOTE:
John Deere Pre diluted Antifreeze/Summer Coolant, John Deere Antifreeze/Summer Coolant Concentrate, and John Deere Engine COOL-GARD contain supplemental coolant additives (SCA's). However, as the coolant solution loses its effectiveness, additives will need to be added. ALWAYS inhibit the antifreeze-coolant mix with a non-chromate inhibitor such as John Deere Liquid Coolant Conditioner. Follow the supplier's recommendations printed on the container. John Deere Liquid Coolant Conditioner is available in the following sizes: Supplemental Coolant Additives (SCA's): DO NOT use soluble oil. -TY16004 473 mL (16 oz) container - TY16005 3.8 L (1 US gal) container