1979 140HP Mercury - Oil/gas ratio?

samm835

Chief Petty Officer
Joined
Dec 12, 2006
Messages
575
I picked up the above motor, but I need to know what the oil/gas ratio is for this motor....any help would be appreciated. I was told 1oz for every gallon of gas, that doesn't seem right to me. Thanks
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 1979 140HP Mercury - Oil/gas ratio?

50:1 is the correct ratio, Samm.

One pint TC-W3 outboard oil to 6 gallons of 87 octane gas, or about 2.6oz. per gallon.
 
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