1973 Evinrude Norseman 40 HP Service Manual, Page 2Get 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 chamber deposits, better spark plug life, good mixability with gasoline even in cold weatherand reduction of pre-ignition OJ
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
SPURIOUS PARTS AND ACCESSORIES
It is recommended that only genuine factory approved replacement parts