Reply To: Gear oil in a 1982 Evinrude 7.5

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April 22, 2023 at 8:40 pm #275437
Mumbles
Participant

    You want gear oil rated for marine use on the container, not automotive gear oil. Marine gear oil has additives to protect the internals in case water gets in and also has antifoaming additives which is necessary in an unvented gearcase.