Manual says 91. So no, not really, but it does burn a little cleaner (less carbon deposits) so I use it. And not many places have 91 around my area. Either 89 or 93.
Manual says 91. So no, not really, but it does burn a little cleaner (less carbon deposits) so I use it. And not many places have 91 around my area. Either 89 or 93.