Hand tightening is best, it prevents overtightening. If you're a torque-spec nerd, I suppose it's fine, but isn't necessary at all. Turn it by hand, no big deal. The manual does say 1 full rotation after contact. And no, contact doesn't mean when it's tightened by hand. Contact means when they touch... However, there are those "oil tech" dudes who screw it on like crazy tight, and yet have no problems. The first time I tried to get my filter off... My goodness... So really, the way you tighten it won't kill it either way. As long as it's not overtorqued like a gorilla.