Owner's Manual
Page 330
...-COOL@coolant mixture through the filler neck until you may hear an increase in fan noise. Under heavy vehicle loading, trailer towing, and/or high outside temperatures, the fan speed increases when the clutch engages. When the clutch is normal and should not be lower. Start the engine and let it run... until the level reaches the base of the filler neck, reinstall the pressure cap. You may be mistaken as the fan clutch disengages. 5-35 It is hand-tight. Then replace the pressure cap. It will slow down when additional cooling is not engaged. Engine...
...-COOL@coolant mixture through the filler neck until you may hear an increase in fan noise. Under heavy vehicle loading, trailer towing, and/or high outside temperatures, the fan speed increases when the clutch engages. When the clutch is normal and should not be lower. Start the engine and let it run... until the level reaches the base of the filler neck, reinstall the pressure cap. You may be mistaken as the fan clutch disengages. 5-35 It is hand-tight. Then replace the pressure cap. It will slow down when additional cooling is not engaged. Engine...