1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Manual, Page 22Get 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 OIVIC .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 label
INote Running
or storing an engine on leaner than recom mended fueloil mixture may result in powerhead damage
INote' Avoid the use of the following as they could damage your
engine andlor 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