Mercury - 10W-30 Oil Change Kit 4-Stroke Yamaha F30-F70 Series Marine Oil & Filter Set 8M0162421. Overview. There's something comforting about knowing your outboard is running on fresh, high-quality oil - the kind of comfort that settles in as you ease away from the dock and feel the engine respond with that smooth, steady note you rely on. If you run a Yamaha F30, F40, F50, F60, or F70, you already understand how important good maintenance is to keeping your trips predictable and your engine ha