Your 1958 Johnson uses a 24 to 1 mixture.
24:1 Manufacturers recommendation. You can go up to 32:1 with the newer oils available. The FD-12 is a 1958.
32:1
50:1 is what I use
I have a 6 hp Johnson seahorse outboard and I was told to run it at 40:1 and have done so for ages and runs fine.
The manufacturer recommends 50:1 mixture roughly 16 oz for 6 gallons
It depends what year. The older ones use 24:1.
I have a 1984 Johnson 8 horse power outboard, what is the gas mixture?
50:1 is the correct mixture for a 1992 Johnson 60 hp outboard.
I have a 1972 85esl72 Johnson outboard motor and I use a 50:1 ratio.
14 to 1!
50 to 1
50:1