Re: fuel mixture for 1960 75hp johnson super seahorse?
That sounds right. My 1960 Evinrude 75hp V4 (should be the same) says 1/3 pt. oil to 1 gal. gas. However, back then they were talking SAE 30 and not TC-W2 or TC-W3.
Might make a difference.
Re: fuel mixture for 1960 75hp johnson super seahorse?
Use the search function and you'll find many posts about this. Included in the posts are opinions about whether modern oils make a difference. Also included in some historical posts is the fact that the recommended fuelil ratio changed from 1963 to 1964 for engines of your size even though the 1963 and 1964 engines are 99% identical.