93 octane in new F300

[Shoulder]

The recommended fuel for the F300 is midgrade 89 octane according to the owner's manual. I have been refueling at my local marina at $6.20 per gallon. No idea what the octane rating is...I assume 86-89. The local Murphy's gas station has ethanol free premium with 93 octane at $4.10 per gallon. The Chevron down the road has 90 octane ethanol free for $4.60 gallon. I just wanted to confirm that running 93 octane will be just fine. I did a search on 93 octane but didn't get hits I was looking for. Thanks.

[boscoe99]

It will be no problem.

Yamaha specifies 89 octane minimum in your model motor. As in higher octane is OK. Lower octane is not.

In fact, the OM says to use higher octane if knocking or pinging is heard. Which my tired ears can't hear over the noise of motor or the wind.