C Cojo005 New Member Jul 7, 2012 #1 87 vs 91 Gas in 1.5 Non-SuperCharged Engines 87 octane or 91 octane in the 155 hp rotax. Which one is preferred? Last edited by a moderator: Jul 8, 2012
87 vs 91 Gas in 1.5 Non-SuperCharged Engines 87 octane or 91 octane in the 155 hp rotax. Which one is preferred?
