Fuels, Lubricants and Coolant 01 002 IMPORTANT: ALWAYS maintain coolant at correct level and concentration. DO NOT operate engine without coolant for even a few minutes. The use of non-recommended supplemental coolant additives may result in additive drop-out and gelation of the coolant. 14 If frequent coolant makeup 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. If other coolants are used, consult the coolant supplier and follow the manufacturer’s recommendation for use of supplemental coolant additives.
See DIESEL ENGINE COOLANTS AND SUPPLEMENTAL ADDITIVE INFORMATION earlier in this group for proper mixing of coolant ingredients before adding to the cooling system. Add the manufacturer’s recommended concentration of supplemental coolant additive. DO NOT add more than the recommended amount. RG,01,DT7035 –19–14NOV00–2/2 Operating in Warm Temperature Climates John Deere engines are designed to operate using glycol base engine coolants. Always use a recommended glycol base engine coolant, even when operating in geographical areas where freeze protection is not required. IMPORTANT: Water may be used as coolant in emergency situations only.
Foaming, hot surface aluminum and iron corrosion, scaling, and cavitation will occur when water is used as the coolant, even when coolant conditioners are added. Drain cooling system and refill with recommended glycol base engine coolant as soon as possible. CTM100 (06APR04) 01-002-14 P OWER T ECH 10.5 L & 12.5 L Diesel Engines DX,COOL6 –19–18MAR96–1/1 040604 PN=44