1978 Evinrude Outboards 9.9/15HP Service Manual, Page 112Get this manual
EVINRUDE 50 TO OUTBOARD LUBRICANT We recommend using EVINRUDE OUTBOARD LUBRICANTEVINRUDE OUTBOARD LUBRICANT is designed specifically for Evinrude outboard motor use at 50 to gasoline to lubricant ratio for engine break in and after break in, new and older modelsThis improved lubrication is formulated to provide additional benefits such as: exceptional lubrication, less varnish and combustion chambsr deposits, better spark plug life, good mixability with gasoline even in cold weather, and reduction of pre-ignition ,
, NOTE If Evinrude Outboard Motor Lubricant should not be available,
see Lubrication Instructions Section 2USE ONLY THE RECOMMENDED LUBRICANT TO GASOLINE MIXTURE, REGARDLESS OF THE CLAIMS MADE FOR SOME OILS