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 engin ...

Tachometer
Tachometer The tachometer indicates engine speed in revolutions per minute (rpm). Do not rev the engine into the red zones. CAUTION: When engine speed approaches the red zone, shift to a hi ...

Too High to Handle
The numbers quantify the Spec V's main disappointments, but there was something fundamentally wrong with the driving experience, and after days and miles I finally concluded that the car is just t ...