Quicksilver Mercury 405060 HP EFI 4-Stroke Oil Change Kit The Quicksilver Mercury 405060 HP EFI 4-Stroke Oil Change Kit has everything you need for your boats routine oil change. This kit includes one liter of Quicksilver 25W-40 engine oil, an oil filter, a seal, and an oil drip tray. Quicksilver 25W-40 marine oil is made to provide the longest lasting, strongest protection possible for your engine. New, advanced corrosion inhibitors outperform competition and meet all industry standards. These