1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 61Get this manual
Fuel Requirements
Recommendation
Minimum Octane (R+M)2 "AKI" "RON"
4GRS, 45, 55
See fuel classifications below See fuel classifications below
Fuel Requirements
Recommendation
Minimum Octane (R+M)2 "AKI" "RON"
4GRS, 45, 55
See fuel classifications below See fuel classifications below