Inside the Oil Pan.
go to wal-mart
check oil pressure with a gauge possible bad pump or engine is tired
2.1 liters
3 lite
4.25 quarts with new oil filter.
check on the top of the cap the closes the area where you pour the oil. the recommended oil is always printed on it. or check the owners manual in the oil maintenance section.
The light means low oil pressure. It can be you installed the wrong filter or the filter is defective. It can mean the oil pressure sending unit is defective and it can also mean the oil pump is failing.
The service manual engine oil capacity for the Leganza 2.2 is 4 liters. I believe it's also in the owners manual.
sounds like you have head gasket problem if the exhaust smoke is white in colour then its engine coolant if its blue smoke then its burning oil you will need to get the engine pressure tested at a garage.
How much oil a Daewoo Lanos SE 1998 is used to change the oil in the motor
4 quarts including the filter. This means when changing the oil you should use a little less than 4 quarts (probably 3.5) -Keith