I need to know what my fuel mixture is!

[linkgb]

I just bought an 1980s? 20 hp Johnson outboard, and I believe it requires a 40:1 or 50:1 ratio but I'm not sure which. How can I know?

 

[DJ]

Re: I need to know what my fuel mixture is!

50:1<br /><br />That is one pint of TCW-3 rated OUTBOARD oil to six gallons of 87 octane unleaded.<br /><br />Premium is not needed or recommended.