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What mixture please.

wassajet

Contributing Member
Hi, i have just inherited a 1980 4hp Mariner 2 stroke outboard, i've been told to use 50 to 1 fuel mixture. Would this be correct please?
 
Yes. Half pint of TC-W3 rated two cycle outboard oil to 3 gallons of 87 octane or better gas. On an '80 might try to run straight gas or surely not more than 10% ethanol. I don't know when Merc upgraded it's rubber to resist alcohol. But I do know that they aren't rated for more than 10%; at least mine isn't and it's a 2002.

Mark
 
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