I'm just curious, as far as pre-filling the oil filter. I've been changing oil on cars for years and years on multiple vehicles, and I've never had one that was reccommended by the manf. to pre-fill the oil filter. It was always a great extra thing to do, if you didn't mind a little extra mess, and wanted to get your oil pressure up fast. This is my first bike, so is pre-filling recommended by Kawasaki? Is the oil pump on these engines a little simpler or is there a design reason that it might be necessary? I'll be glad to do it, I'm just trying to learn a little more.