• If operating in arctic temperatures of -20°F (-29°C) or lower, consult
your truck dealer for information about special cold weather
equipment and precautions.
Note: Idling in cold weather will not heat the engine to its normal
operating temperature. Long periods of idling in cold weather can cause
a buildup of heavy deposits of carbon and rust on valve stems causing
them to stick, which in turn, can cause valve train damage.
The following cold weather idling guidelines must be followed:
• Avoid idling the engine for more than 10 minutes at a time.
• Use Motorcraft Cetane improvers or non alcohol-based Cetane
improvers from a reputable manufacturer.
• Maintain the engine cooling system properly.
• Do not shut the engine down after an extensive idling period (10
minutes or more). Drive the vehicle for several miles with the engine
at normal operating temperatures under a moderate load to burn off
any accumulated carbon and varnish.
• Consider using an engine block heater.
• For extended idle times use an approved idle speed increase device.
Winter operating tips for Arctic operation -20°F (-29°C) and below
The following information is provided as a guideline only, and is not
intended to be the only source of possible solutions in resolving extreme
cold temperature issues.
Starting aids:
The use of the factory engine block heater (refer to Using the engine
block heater [if equipped] in the Driving chapter of the Owner’s
Guide) and oil pan heaters (aftermarket) will assist in engine starting, in
extreme cold ambient temperatures.
Do not use starting fluid, such as ether, in the air intake system
(see air filter decal). Such fluid could cause immediate explosive
damage to the engine and possible personal injury.
Idle control:
For periods of extended idle, the throttle should be set at an rpm that is
sufficient to keep the engine at normal operating temperatures. This
action can reduce the amount of engine damaging deposits.
2008 Econoline (eco)
Supplement
USA (fus)
Driving
14
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