FORD 2001 E-450 - Manual (Page 149)

Change your engine oil and filter according to the appropriate schedule
listed in the scheduled maintenance guide.
Ford production and aftermarket (Motorcraft) oil filters are designed for
added engine protection and long life. If a replacement oil filter is used
that does not meet Ford material and design specifications, start-up
engine noises or knock may be experienced.
It is recommended you use the appropriate Motorcraft oil filter (or
another brand meeting Ford specifications) for your engine application.
AIR FILTER MAINTENANCE
Refer to the scheduled maintenance guide for the appropriate intervals
for changing the air filter element.
When changing the air filter element, use only the Motorcraft air filter
element listed. Refer to Motorcraft Part Numbers in the Capacities and
specifications chapter.
Do not start your engine with the air cleaner removed and do
not remove it while the engine is running.
Changing the air filter element
1. Disconnect the fresh air inlet tube
from the radiator support.
2. Loosen the clamp that secures
the two halves of the air filter
housing together.
3. Carefully separate the two halves
of the air filter housing.
4. Remove the air filter element
from the housing.
Maintenance and care
149