Gas/Oil mix in 1958 Mark 10

[fishmasterinvt]

I just bought this outboard and am wondering if I should still run the gas/oil mix at 20:1 using the modern 2 stroke outboard oil. I use 50:1 in every 2 stroke I own, but don't want to commit a fatal error on such a nice little engine. Thanks.

 

[Scott Danforth]

Use the 20:1 on that old outboard. You may be able to go to 25:1, however I would keep it at 20:1 myself