1971 Johnson 40HP outboards Service Manual, Page 2Get this manual
JOHNSON OUTBOARD OIL We recommend using JOHNSON OUTBOARD LUBRICANTJOHNSON OUTBOARD LUBRICANT is designedspecifically for Johnson 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 asexceptional lubrication, less varnish and combustion chamber deposits, better spark plug life, good mixability with gasoline even in cold weather, and reduction of pre-ignition If Johnson Outboard Motor Lubricant should not be available, see lubrication instructions Section 2