I think you are talking about a tank separate from the engine, like I had on my '88 115 hp "tower of power" and what Merc. did prior to adding the tank to the engine proper and using a geared (to the crankshaft) internal oil pump. Fine. May have a low oil alarm that you will have to disable...don't remember, removing the power plug may accomplish that...sold the boat in '95...been awhile....either short the sense wires together or leave them disconnected. Don't forget to add oil (pint/6 gallons TC-W3 rated) when you fill up...I wrote it on my transom adjacent to my fill port so I wouldn't forget.
