See also:

Checking the amount of air conditioner refrigerant and compressor lubricant
When the amount of refrigerant is low, the performance of the air conditioning is reduced. Overfilling also has a negative influence on the air conditioning system. Therefore, if abnormal operatio ...

2011 Hyundai Sonata review
I've gotten tired of writing about the next good Hyundai. And according to the late night profanity-laced messages left on my voice mail, so have Detroit readers. So let's just stop acting surpr ...

TACHOMETER
The tachometer registers the speed of your engine in revolutions per minute (rpm). CAUTION: The engine should not be increased to such a speed that the needle enters the red zone on the tachomet ...