ADDING more oil may indicate it is working properly. Chilton's makes a fine manual for most cars.
Low oil will trigger a different warning light, specifically the low oil light will come on.
busted oil pressure sensor or oil level is already low - add more engine oil. try to fix the leak if the oil drips on a fast rate.
Never seen a check engine oil light. There is a low oil pressure light which means you have low oil pressure which could be low oil level among other things.
The light you refer to is not a low oil level light. It indicates low oil pressure. You may have plenty of oil in the engine but you have low oil pressure. Can be weak oil pump, worn bearings, or can be just a defective oil pressure sending unit.
It has to be about 2 qts. low for the light to come on.
That light is for low oil pressure, not low level.
This is a warning light trying to tell you that your oil is low... CHECK IT. ADD OIL if low!!
Oil light senses oil pressure not oil level
The light is not a low oil light, it is a low oil pressure light. Yes, a weak pump will cause this. Also a bad oil pressure sending unit can cause this.
The light is NOT a low oil light. It is a low OIL PRESSURE light. You can drive it until the engine seizes. Of course internal engine damage will start to occur as soon as the light comes on and you have no oil pressure if you continue to drive the vehicle.
When the check gauges light comes on it is telling you to check the gauges because at least one of the gauges is out of normal range. It could be low oil pressure, engine over heating or low voltage.
When the low oil level light comes on, it means that the car has a low level of oil. This means a person needs to add oil to their car.