The tachometer displays the engine speed in revolutions per minute (rpm).
Notice: If the engine is operated with the tachometer in the shaded warning area, the vehicle could be damaged, and the damages would not be covered by the vehicle warranty.
Do not operate the engine with the tachometer in the shaded warning area.
Chevrolet Cobalt Service & Repair Manual. Lube, Oil & Filter, Replace
Caution: Prolonged and repeated
contact with engine oil and grease will result in removal of natural oils
from skin, leading to dryness, irritation and dermatitis. In addition, used
engine oil and grease contains potentially harmful contaminants which may
cause skin cancer. Pr ...