Fuels, Lubricants, and Coolant Diesel Engine Coolant The engine cooling system is filled to provide year-round protection against corrosion and cylinder liner pitting, and winter freeze protection to -37 ° C (-34 ° F). If protection at lower temperatures is required, consult your John Deere dealer for recommendations. Other low silicate ethylene glycol base coolants for heavy-duty engines may also be used if they meet one of the following specifications: ASTM D4985 ethylene glycol base prediluted (50%) coolant ASTM D4985 ethylene glycol base coolant concentrate in a 40% to 60% mixture of concentrate with quality water John Deere COOL-GARD Prediluted Coolant is preferred for service.
John Deere COOL-GARD Prediluted Coolant is available in either a concentration of 50% ethylene glycol or a 55% propylene glycol. Coolants meeting ASTM D4985 require an initial charge of supplemental coolant additives, formulated for protection of heavy duty diesel engines against corrosion and cylinder liner erosion and pitting. They also require periodic replenishment of additives during the drain interval. Additional recommended coolants The following engine coolant is also recommended: John Deere COOL-GARD Coolant Concentrate in a 40% to 60% mixture of concentrate with quality water.
Other coolants If a coolant known to meet the requirements of coolant specifications shown in this manual is not available, use either: John Deere COOL-GARD coolants do not require use of supplemental coolant additives, except for periodic replenishment of additives during the drain interval. ethylene glycol or propylene glycol base prediluted (40% to 60%) coolant ethylene glycol or propylene glycol base coolant concentrate in a 40% to 60% mixture of concentrate with quality water Other fully formulated coolants Other fully formulated low silicate ethylene or propylene glycol base coolants for heavy-duty engines may be used if they meet one of the following specifications:
The coolant concentrate or prediluted coolant shall be of a quality that provides cavitation protection to cast iron and aluminum parts in the cooling system. ASTM D6210 prediluted (50%) coolant ASTM D6210 coolant concentrate in a 40% to 60% mixture of concentrate with quality water Water quality Water quality is important to the performance of the cooling system. Distilled, deionized, or demineralized water is recommended for mixing with ethylene glycol and propylene glycol base engine coolant concentrate. Coolants meeting ASTM D6210 do not require use of supplemental coolant additives, except for periodic replenishment of additives during the drain interval.
Coolants requiring supplemental coolant additives COOL-GARD is a trademark of Deere & Company Continued on next page DX,COOL3 –19–19DEC03–1/2 10-11 021604 PN=41