1997 Mercury Grand Marquis Owner Guide 1st Printing - 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. 2. 3. Pull off the road as soon as safely possible. Shut off the engine immediately or severe engine damage could result. 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. 20