Electric Anchor Winch Servicing

Grease, always grease. If there is no oil pump or significant splashing then bearings would run dry very quickly with oil.
Maxwell Winches (also Nilsson) of Newzealand recommend Castrol TC grease SP 1442.
 
Nothing in an anchor windlass runs particularly fast, or under particular pressure, so any sort of light grease will do. You are to be congratulated on actually wanting to service it, I doubt that many people do.
 
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