F 250 2WD Pickup V8-6.9L DSL (1985)
Engine Oil: Technical Service Bulletins
Diesel Engine - Extended Idling Oil Dilution
Article No. 85-25-18
IDLE - EXTENDED (6.9L) - SERVICE PROCEDURE
LIGHT TRUCK 1983-86 E AND F SERIES
To minimize dilution/deterioration of the engine oil when the engine idles for extended periods, the owner should adhere to the following:
1.
The vehicle should be operated at normal highway conditions for a minimum of one hour, before extended periods of engine idling. This will raise
the engine oil temperature, and purge the unburned fuel from the engine oil.
2.
At temperatures of O~F (-18~C) or above, use 15W40 SF/CD or equivalent engine oil. For temperatures below O~F, use 1OW30SF/CD engine
oil. SF/CC oils are NOT recommended for extended periods of idling.
3.
To prevent excessive oil dilution during extended periods of engine idling, the engine speed should be raised to 1200 rpm.
4.
As specified in the Owner Guide, Severe Service Operation - Extended Idling, the engine oil must be changed at 2500 miles (4000 kilometers), or
3 months interval.
The owner should be advised that extended idling will increase engine oil consumption. The owner should check the engine oil level daily after the
engine has stabilized at normal highway conditions (not after extended idling - the oil is too cold and thick for accurate level readings).
WARNING:
Never idle engine in closed areas. Never sit in a parked or stopped vehicle for any extended amount of time with the engine running.
Exhaust gases, particularly carbon monoxide, may build up. These gases are harmful and potentially lethal.
The owner should also be advised that extended idling will cause accumulation of moisture in the exhaust pipe. The moisture and resulting wet, sooty
film will cause high exhaust smoke levels. The moisture and smoke will dissipate when the engine is operated at normal highway conditions.
OTHER APPLICABLE ARTICLES: 84-1-13
WARRANTY STATUS: "INFORMATION ONLY"
