1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 20Get this manual
FuelOil Ratios Lubricant Only the following lubricants should be used: Evinrude TC-W3 Outboard Lubricant Johnson TC-W3 Outboard Lubricant These lubricants are formulated by ONIC to give best engine performance while: Controlling piston and combustion chamber deposits Providing superior lubrication Ensuring maximum spark plug life If Evinrude or Johnson Outboard Lubricant is not available, another NMMA certified TC-W3 oil may be usedLook for the certification information on the container labelI Note Running or storing an engine on leaner than recom-
mended fueloil mixture may result in powerhead damage'Note Avoid the use of the following as they could damage your
engine andor shorten spark plug life: Automotive Premix fuel Premix fuel Premix fuel oils of unknown oil quantity richer than the recommended ratio leaner than the recommended ratio