an oil light or sometimes an "idiot light" (named for the lack of an analog oil pressure guage) can come on at a low idle for a couple reasons. But first know that the oil pump spins mechanically with the RPM's of the engine. the slower the engine turns the slower the pump turns. this is why the light goes out when you rev the engine, the pump creates more oil pressure in the system and satisfies the pressure switch that activates the light. just a couple of things that can cause this. a: high mileage, old worn out bearings with wide tolerances dont restrict the oil enough and it will just run out and back into the pan, with pressure dropping at each bearing. b: too thin of an oil weight, when your engine heats up, a thinner oil, possibly in conjunction with "a" can act like water and will run through the system much faster and with less effectiveness. similar to pouring something thin through a funnel and something thick through a funnel. c: worn out fuel pump,
Excessive internal engine wear? Install a manual gauge the check oil pressure
Low oil will trigger a different warning light, specifically the low oil light will come on.
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 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.
Light oil has a low density and flows freely when found in room temperature. It also has low specific gravity and low viscosity.