Re: Lower Unit Gear Lube Rule of Thumb?

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May 19, 2015 at 4:31 pm #16451
Mumbles
Participant

    If the gearcase has seals on the shafts, I’d go with the oil. Gear oil is the desired lubricant over grease in any gearcase which can be sealed up. If I can do some machining and adapt seals to my antique grease style cases, I do it and run OMC/BRP HI-Vis or Mercury Hi Performance synthetic in them.