Mercury - Oil Change Kit 40-50-60HP FourStroke Service 8M0081912. Overview. This kit brings together the basic pieces you need to service a 40, 50, or 60HP Mercury FourStroke. Instead of tracking down the filter, oil, and the small gasket separately, everything is here in one box. It makes the job more straightforward and keeps the service routine consistent. Most techs prefer having the set ready to go-it saves time and removes a lot of second-guessing.. Key Features. • OEM Oil Filter - Sized f