* 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 scheduled maintenance guide.
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.
Use Ford Engine Oil Filter Part No. F4TZ-6731–A (FL–1995) or
equivalent. These filters protect your engine by filtering harmful,
abrasive or sludge particles. The FL–1995 filters particles significantly
smaller than most available “will fit” filters.
To replace, use an oil filter wrench to unscrew the filter from the oil
cooler fitting. Turn it horizontally to let excess oil drain off, and remove.
A
P
I
SE
RVI
CE CH
-4
/S
L
SAE
15W-40
General maintenance information
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