Ford 1997 Crown Victoria Manual page 23

If it stays outside the normal band, have your
vehicle's electrical system checked as soon as it
is safely possible.
The battery voltage gauge
Engine Oil Pressure Gauge
This gauge indicates the engine 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, see the Engine Oil in the Index. If you do
not follow these instructions, you or others
could be injured. To assure an accurate
reading, your car should be on level ground.
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