Quicksilver Mercury 1520 HP Carb 4-Stroke Oil Change Kit The Quicksilver Mercury 1520 HP 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, and a seal. 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 corrosion inhibitors prov