https://www.thoughtco.com/start-car-...storage-726206
If the car has been sitting for over 90 days, you should remove the spark plugs and add some form of lubricant into the cylinders, like Marvel Mystery Oil, before these parts start moving or to free up any stuck piston rings.
With the spark plugs removed, turn the engine over with the key several times to let the oil you put into the cylinders lubricate the cylinder walls and to prime the oil and fuel pumps prior to ignition. You should keep cranking the engine until the oil pressure gauge reads normal or your oil pressure light goes out before returning the spark plugs and leads back to their correct position.