What year do you have, I've had a couple 08's and never seen the sticker. I'm not sure why they would suggest it though, 10:1 with an aluminum head wouldn't raise flags to meThere is a sticker on my gas tank saying to run premium from factory.
they all come with 93 sticker after about 8 months later from being new , the pressure washer an me spilling gas on it f3cked it up and it come loose on my 700XXI have the same sticker as well