I live in the Kansas City, MO area. I saw reading my owners manual that Can Am recommends 91 octaane gas. I ride a lot in the rural areas of Missouri, Kansas and Iowa. The higher octane gas is not always available. Many times it is not even an offered. Does anyone add an octane boost or is 89/87 octane with ethenol OK to run.? I have a 2014 RTL.