1994 Buick Century Owner's Manual - Page 112

The Instrument Panel: Your Information System Speedometer and Odometer Your speedometer lets you see your speed in both miles per hour (mph) and kilometers per hour (km/h). Your odometer shows how far your vehicle has been driven, in either miles (used in the U.S.) or kilometers (used in Canada). Your Buick has a "tamper-resistant odometer." If you can see very noticeable bright silver lines between the numbers, probably someone has tried to turn it back. The numbers may not be true. You may wonder what happens if a vehicle has to have a new odometer installed. If possible, the new one has to be set to the same reading as the old one. If it can't be, then it's set at zero, and a label on the driver's door must show the old reading and when the new one was installed. Your instrument panel is designed to let you know at a glance how your vehicle is running. You'll know how fast you're going, how much fuel you're using, and many other things you'll need to drive safely and economically. 110