2004 Ford F250 Diesel Supplement 2nd Printing - Page 41

2004 Ford F250 Manual

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Maintenance and Specifications Engine oils with improved fuel economy properties (energy conserving) are currently available. If you use an energy conserving oil, be sure it meets the recommended Ford Specification, API service categories and SAE viscosity grades listed in the Lubricant and Maintenance Materials Specifications chart. Some energy conserving oils do not meet the requirements necessary for your diesel engine. * Heavy duty trailer towing with ambient temperatures above 10°C (50°F) requires 15W-40 engine oil. The use of correct oil viscosities for diesel engines is important for satisfactory operation. Determine which oil viscosity best suits the temperature range you expect to encounter for the next service interval. A symbol has been developed by the American Petroleum Institute (API) to help you select the proper engine oil. It will be included on the oil container you purchase. The top section of the symbol shows the oil performance by the API designation. This should match the owner guide recommendation. The center section will show the SAE viscosity grade. The lower section will state energy conserving if the oil has proven fuel saving capabilities. Changing engine oil and filter Change your oil and filter according to the General Owner's Information section of this supplement. Change more frequently if your vehicle operation includes extended periods of idling or low-speed operation, driving for a long time in cold temperatures or driving short distances. See the following section Engine lubrication for severe service operation for all severe duty restrictions. 41

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Engine oils with improved fuel economy properties (energy conserving)
are currently available. If you use an energy conserving oil, be sure it
meets the recommended Ford Specification,
API
service categories and
SAE viscosity grades listed in the Lubricant and Maintenance Materials
Specifications chart. Some energy conserving oils
do not
meet the
requirements necessary for your diesel engine.
* Heavy duty trailer towing with ambient temperatures above 10
°
C
(50
°
F) requires 15W-40 engine oil.
The use of correct oil viscosities for diesel engines is important for
satisfactory operation. Determine which oil viscosity best suits the
temperature range you expect to encounter for the next service interval.
A symbol has been developed by the
American Petroleum Institute (API)
to help you select the proper engine
oil. It will be included on the oil
container you purchase. The top
section of the symbol shows the oil
performance by the API designation.
This should match the owner guide recommendation. The center section
will show the SAE viscosity grade. The lower section will state energy
conserving if the oil has proven fuel saving capabilities.
Changing engine oil and filter
Change your oil and filter according to the
General Owner
’
s
Information
section of this supplement. Change more frequently if your
vehicle operation includes extended periods of idling or low-speed
operation, driving for a long time in cold temperatures or driving short
distances. See the following section
Engine lubrication for severe
service operation
for all severe duty restrictions.
Maintenance and Specifications
41