Fuels, Lubricants, and Coolant Diesel Fuel Flow Additive If winterfronts are used, they should never totally close off the grill frontal area. Approximately 25% area in the center of the grill should remain open at all times. At no time should the air blockage device be applied directly to the radiator core. IMPORTANT: Treat fuel when outside temperature drops below 0 ° C (32 ° F). For best results, use with untreated fuel. Follow all recommended instructions on label. Radiator Shutters Use John Deere Premium Diesel Fuel Conditioner (Winter) or equivalent to treat fuel during the cold weather season. This winter formulation is a combination diesel fuel conditioner and anti-gel additive.
If equipped with a thermostatically controlled radiator shutter system, this system should be regulated in such a way that the shutters are completely open by the time the coolant reaches 93 ° C (200 ° F) to prevent excessive intake manifold temperatures. Manually controlled systems are not recommended. Winterfronts If air-to-air aftercooling is used, the shutters must be completely open by the time the intake manifold air temperature reaches the maximum allowable temperature out of the charge air cooler. Use of fabric, cardboard, or solid winterfronts is not recommended with any John Deere engine. Their use can result in excessive engine coolant, oil, and charge air temperatures.
This can lead to reduced engine life, loss of power and poor fuel economy. Winterfronts may also put abnormal stress on fan and fan drive components potentially causing premature failures. For more information, see your John Deere engine distributor or servicing dealer. RG,RG34710,7529 –19–25FEB03–2/2 10-5 021604 PN=35