Instead of driving my new AK550 to the Dealer for its first oil change I did it myself. I had 290 miles on it. The oil filter that was on it was HiFLO Filtro HF164. Ordered that from my nearest Wal-mart. Called my dealer to ask them what oil they used. Didn’t want to use a different oil than they use, as I know they will be doing at least some of my oil changes, among servicing. They use Amsoil 10w-40. Had to order that on-line. Going slow, taking my time and being careful not to break any tabs etc.... Got it accomplished. Did find some metal shavings on one of the filter screens of a drain. Didn’t think it was excessive. All seems ok. Next time I do this, hopefully I will be much quicker.😃😃