Capacity is 6 quarts, K&N filter is sweet, since it has that nut on it to make it easy to take off. Synthetic oil is nice as well, although the high mileage oils have additives in the that swell seals, intending to stop leaks, which they do, but lead to ultimate failure sooner than would have happened otherwise.
bobistheoilguy.com or something like that has more info than you'll ever want to know about oil