Sae30 or TCW3

[gpadbury]

I have a 1951 7.5 Evinrude shpuld I continue to use SAE 30 motor oil or change to TCW 3 If so what ratio should I use for the TCW 3
At present I am using 16 to 1 with the SAE 30 motor oil.
Thank you for any recomendations.

[rickdb1]

"I would use TCW-3, as it will burn much cleaner and cause less carbon build-up. 24:1 will be fine for use with the bronze bearings in that engine..."