Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
You need to get your car to a workshop asap.
Don't drive it until it gets looked at.
It could be just a oil pressure switch failure, or it could have no oil pressure, which generally ends up being engine failure.
Hence why you should not drive it until it gets inspected.
Ok, you have put in 3 litres, and the level is correct now.
And the oil pressure lamp is on with the engine running?
Does the engine sound normal, or is it noisy?
I would still have the oil pressure checked by a mechanic.
It might be just the switch that has failed.
Can we continue in the morning?
Good night for now.
Do you need any further help?
I hope my advice has been of assistance to you.