Ford 1997 Aerostar Manual page 233

NOTE: 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, startup 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.
Checking and Adding Engine Oil
Since the proper amount of engine oil is
important for safe engine operation, check the oil
using the dipstick each time you put fuel in
your vehicle. Remember the engine must be off,
the oil must be warm and the vehicle must be
parked on level ground.
Checking the engine oil level:
1. Turn the engine off after it has warmed up
and allow a few minutes for the engine oil
to drain back into the oil pan.
2. Set the parking brake, making sure the
gearshift is securely latched in P (Park).
3. Open the hood. Protect yourself from engine
heat.
4. Locate the engine oil dipstick (highlighted in
yellow) and carefully pull it out of the
engine.
5. Wipe the dipstick clean and put it back into
position, making sure it is fully seated.
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