oil ratio for my 1973 johnson 85 hp

[fishnohio]

i just bought a boat with a 1973 johnson 85 hp on it and am wondering what gas to oil ratio to run in it and what are the best name brand oils to run and is there any other additives that need to be added to the fuel?, thank you for all your help....Mike

 

[ezeke]

Re: oil ratio for my 1973 johnson 85 hp

Use 50:1 87 or 89 US Octane to TCW-3 Oil. BRP XD 50 is a good synthetic blend with carbX to keep the firng chambers clean.