Mercury - Sterndrive Oil Change Kit 4.3L V6 Marine Oil Service 8M0182227. Overview. There's a certain reassurance that comes from changing your boat's oil yourself. You hear the old oil drain out, pour in the fresh Mercury 25W-40, and suddenly the engine feels younger, cleaner, and ready for another season of early launches and long idle zones. The Mercury 8M0182227 Sterndrive Oil Change Kit gives you that feeling every time. Everything you need is right there in one box, and once the job's done