See also:

Octane rating tips
Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to eng ...

Checking seat belt operation
Seat belt retractors are designed to lock seat belt movement by two separate methods: ● When the seat belt is pulled quickly from the retractor. ● When the vehicle slows down rapidly. ...

AM radio reception
AM signals, because of their low frequency, can bend around objects and skip along the ground. In addition, the signals can be bounced off the ionosphere and bent back to earth. Because of these c ...