The oil warning light indicates low oil pressure, not low level . NEVER rely on the oil light to indicate level
Oil pressure light and dipstick are everything I can use to understand if there's oil in the engine.@Memmeddu
Oil pressure light may be fine, there may have been enough oil left in to pressurise the system. You may have an indicator for oil level as well as pressure, but don't rely on it, check with dipstick as well.
Think of the sump as a tank. The pickup for the pump will be at the bottom. The oil pressure switch will turn on the warning light when there is no oil pressure coming from the pump, and that's when you're going to be saying goodbye to bearings fairly promptly. Now the dipstick (if you're lucky enough to have one... thanks for that BMW) will be showing the max level at somewhere higher up the sump ie. the max level the manufacturer wants you to fill the sump. But on many cars (at least all I think I've ever seen) the dipstick doesn't go to the bottom of the sump, so (not that I'd recommend it) you can have a level below the end of the dipstick and still have normal oil flow.Oil pressure light and dipstick are everything I can use to understand if there's oil in the engine.
You're thinking right ,my engine for example should have 1.5 litres of oil at lowest level (below dipstick) , and nearly 3 at highest .Think of the sump as a tank. The pickup for the pump will be at the bottom. The oil pressure switch will turn on the warning light when there is no oil pressure coming from the pump, and that's when you're going to be saying goodbye to bearings fairly promptly. Now the dipstick (if you're lucky enough to have one... thanks for that BMW) will be showing the max level at somewhere higher up the sump ie. the max level the manufacturer wants you to fill the sump. But on many cars (at least all I think I've ever seen) the dipstick doesn't go to the bottom of the sump, so (not that I'd recommend it) you can have a level below the end of the dipstick and still have normal oil flow.
Just feed my oven.
Ladders are just perfect to build conveyor.