Ford 1997 Aerostar Manual page 19

Engine Oil Pressure Gauge
This gauge indicates the engine's oil pressure,
not the oil level. However, if your engine's oil
level is low, it could affect the oil pressure. With
the engine running, the pointer should move
into the NORMAL band. If the pointer drops
below the NORMAL band while the engine is
running, you have lost oil pressure and
continued operation will cause severe engine
damage.
If you lose engine oil pressure:
1. Pull off the road as soon as safely possible.
2. Shut off the engine immediately or severe
engine damage could result.
3. Check the engine's oil level, following the
instructions on checking and adding engine
oil. Refer to Engine oil in the Index. If you
do not follow these instructions, you or
others could be injured. To assure an
accurate reading, your vehicle should be on
level ground.
4. If the level is low, add only as much oil as
necessary before you start the engine again.
Do not overfill. Do not operate the engine if
the pointer is below the NORMAL band,
regardless of the oil level. Contact your
nearest dealer for further service actions.
Engine oil pressure gauge
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