2005 Ford F350 Diesel Supplement 3rd Printing - Page 36

2005 Ford F350 Manual

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Maintenance and Specifications Engine oil specifications To help achieve proper engine performance and durability, it is important that only engine lubricating oils of the proper quality are used in your diesel engine and that the engine oil is changed no later than the recommended interval. Diesel engines require specially formulated oil to resist contamination. Proper quality oils also provide maximum efficiency of the crankcase ventilating system which reduces air pollution. For normal or severe service, use Motorcraft oil or an equivalent oil conforming to Ford Specification WSS-M2C171-D or API Service categories CI-4, CI-4/SL or DHD-1. If CI-4 oil is not available, CH-4 is acceptable. 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 50°F (10°C) 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. 36 2005 Econoline (eco) Supplement USA (fus)

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Engine oil specifications
To help achieve proper engine performance and durability, it is important
that only engine lubricating oils of the proper quality are used in your
diesel engine and that the engine oil is changed
no later
than the
recommended interval. Diesel engines require specially formulated oil to
resist contamination. Proper quality oils also provide maximum efficiency
of the crankcase ventilating system which reduces air pollution.
For normal or severe service, use Motorcraft oil or an equivalent oil
conforming to Ford Specification WSS-M2C171–D or API Service
categories CI-4, CI-4/SL or DHD-1. If CI-4 oil is not available, CH-4 is
acceptable.
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 50°F
(10°C) 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.
2005 Econoline
(eco)
Supplement
USA
(fus)
Maintenance and Specifications
36