Want to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional oil analysis kits. Results are typically received in a few days via email. Shop now. This convenient kit includes 1 gallon of Mercury FC-W 25W-40 Marine Engine Oil a Genuine 35-8M0065104 Mercury oil filter This kit is intended for use with the following Mercury Four-Stroke Outboard Models: 25 HP - 1998-2005 30 HP - 1999-2005 40 HP - 1999-2017 50 HP - 1995-2017 60 HP - 2001-2017 The amount of oil included in this kit is adequate for most of the specifically noted Mercury outboard models. If your particular outboard requires additional oil, please be sure to purchase this separately. Mercury FC-W 25W-40 Marine Engine Oil Mercury's 4-stroke oil technology outperforms automotive oils in marine applications because of its specialized add