I’d suggest wiping everything down as clean as possible (ideally just before the oil change), and check it again after some miles are on to see if you can better identify where it’s coming from.
With any luck it will be from the filter area, and the oil change will have dealt with it, but if not, at least you’ll have a better idea of the source.
With any luck it will be from the filter area, and the oil change will have dealt with it, but if not, at least you’ll have a better idea of the source.