@aygart, take a second to think about bukboy's question, it's a very good question.
The Bais Yosef asks a kashya that there seems to be no nes, because there was enough oil for 1 day. if there's no heicha timtze to have a nes for 7 days, without there also being a nes on the first day, kushya mei'ikara lesa. And the way the Bais Yosef shouldn't be worded as a kashya.
It is very obvious to the experienced learner (as I assume bukboy is), that the Bais Yosef seemed to have a premise about how the nes occured, and according to that premise there should have only been 7 days of nes.
I think the Bais Yosef's premise was like chinagel, but it's a shvere premise, because, if it burned from day 2 thru 8 without oil, it wouldn't be a flame from oil, and would be pasul.