The K&N filter is not a reusable filter. For the nut, it's on the bottom. So to make it easier to install/remove. Now being disabled and retired, I don't get out much. Specially now in the winter. In a year and a half, it's just have 2000 miles on this oil change. When I was working, 6000 to 8000 miles a year. So I would change oil at 5000 miles. With being disabled these past years, the pickup only got around a 1000 miles for a couple years. And that dash oil life counter would say needs an oil change in less than 6 months. And it was just sitting in the garage. And so far shows no signs of oil usage.