1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 24Get this manual
Engine Lubricant Only the following lubricants should be used :
Evinrude TC-W3 Outboard Lubricant Johnson TC-W3 Outboard Lubricant
These lubricants are formulated by CIVIC to give best engine performance whileControlling 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-W oil may be usedLook for the certification information on the container labelSome additives in Evinrudel Johnson Outboard Lubricant are subject to evaporationAlways cover partially filled containers to prevent deterioration of lubricant