Evinrude outboard 3 hp light twin, roughly 1960

by Scott

 Evinrude outboard 3 h

Evinrude outboard 3 h

On the engine it says use 30 weight outboard oil ,This is a gas oil mix. Is 30 weight outboard oil a specific oil. Or May I use straight 30 weight. That is my question I believe it’s a 1/3 oil to 1 gallon gas. Thank you Scott

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