See also:

Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). ...

Fuel Additives
To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control system to ...

If No Steam Is Coming From YourEngine
If you get an engine overheat warning but see or hear no steam, the problem may not be too serious. Sometimes the engine can get a little too hot when you: • Climb a long hill on a hot day. â ...