Reply To: 1958 Evinrude 4- Fifty horse, model 50012 advice

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September 19, 2022 at 5:27 pm #266346
JOSEPH BRINCAT
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    Gear lube.. I use 85-90 GL4 .   GL4 grade does not have the sulfur additives in GL5 grade that attack brass/ bronze parts. Now I don’t think ??? that your motor has any bronze parts, but I use the GL4 in all my sealed outboard gear cases. I know that Napa has the GL4 gear lube.

    Joe B