yea true that, use what you feel safe with.
IE: if you used Valvoline Oils in your Cars all your Life (like me) stick with it...
But back to the Ninja oil filters... of the filters that FIT our bikes... besides the WIX 24941 filter... what Others COME with the O-rings? BAM you buy 1 item, and all 3 come with it. no need to hunt for Orings n ****! Ive been looking into filters for my ninja for 3 weeks now, calling places, looking at afew filters (open box) to see what kind Orings come or Dont come with them... today i found a WIX dealer, and its only 8 miles from home, no Ordering **** online,etc... Drive and BUY when i need one! So thats what it comes to for me!