I'd go with either the Valvoline or the Honda oil. No special oil for the filter, just keep it clean. I use either K&N filter cleaner or regular gasoline and let it air dry then hit it with some K&N filter oil on the inside, put it in a ziplock bag and spread the oil with your hands.
I use hypoid gear oil SAE #80 in my diffs. Pay close attention to the oil filter, it has to go in a certain way and if you put it in backwards you can damage your motor.
