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 twin engine oil change kit includes 2 gallons of Yamalube 10W-30 4M Outboard Mineral FC-W Engine Oil 2 Genuine 5GH-13440-71-00 Yamaha oil filters 2 necessary drain bolt gaskets This kit is intended for use with all Yamaha F115 outboard models. The amount of oil included in this kit is adequate for most of the specifically noted Yamaha outboard models. If your particular outboard requires additional oil, please be sure to purchase this separately. Yamalube 4M is a mineral-based four-stroke outboard engine oil that's an approved NMMA FC-W formulation specifically for use in the harsh marine environment. The FC-W rating, which sets the