1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 22Get this manual
Fuel Requirements Minimum Octane Models 100WT, WM All Other Models Recommendations See fuel classifications belowSee fuel classifications below(R+M)2 "AKI" 87 87 "RON" 75 90
PCE0020
Preferred Fuel: Any regular unleaded, regular leaded, or premium unleaded gasoline having the recommended octane rating, and not extended with alcoholAcceptable Fuel: Any of the above gasolines with up to the following percentage alcohol by volume: 10 ETHANOL or METHANOL with cosolvents Unacceptable Fuel: Do not use any gasoline having more than 10 ETHANOL or more than METHANOL even if it contains cosolvents or corrosion inhibitor, regardless of octane ratingOMC products have been designed to operate using the Preferred Fuel or Acceptable Fuel; however, be aware of the following: