Cummins
The two most commonly used terms associated with preparation of equipment for low-temperature operation are "winterization" and "arctic specifications."
Winterization of the engine and/or components, so that starting and operating are possible in the lowest temperature to be encountered, requires:
-
Proper lubrication with low-temperature lubricating oils.
-
Protection from the low-temperature air. The metal temperature does not change, but the rate of heat dissipation is affected.
-
Fuel of the proper grade for the lowest temperature.
-
Heat to raise the engine block and component temperatures to at least –25°F (–32°C) for starting in lower temperatures.
-
Electrical equipment capable of operating in the lowest expected temperature. All switches, connections, and batteries in the electrical system should be inspected and kept in good condition to prevent losses through poor contacts.
Arctic specifications refer to the design of material and specifications of components necessary for satisfactory engine operation in extremely low temperatures to –65°F (–54°C). Contact the nearest Freightliner dealer or Cummins engine dealer, to obtain the special items required.
Caution: "Antileak" antifreezes are not recommended for use in Cummins engines. Although these antifreezes are chemically compatible with DCA water treatment, the "antileak" agents may clog the coolant filters.
Important: Fuel heaters used on vehicles with Cummins CELECT Plus engine systems could cause high fuel temperatures that affect engine performance and operation of the electronic engine controls. If a fuel heater is used, make sure it has thermostatic controls. If the fuel heater has a timer, set the timer to activate only for a limited period of time before the engine starts. Make sure the fuel heater is used only for starting the engine.
For more information, see the Cummins Operation and Maintenance Manual .