1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 26Get this manual
FuelOil Ratios Lubricant Only the following lubricants should be used:
Evinrude Outboard Lubricant Johnson Outboard Lubricant OMC 2-Cycle Motor Oil
They are formulated to give best engine performance with least combustion chamber deposits, least piston varnish, maximum spark plug life, maximum corrosion protection, and best lubricationIf Evinrude or Johnson Outboard Lubricant or OMC 2-Cycle Motor Oil is not available, another NMMA certified TC-W II oil may be usedLook for the certification information on the container labeloe
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