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.Mercury 100 Hour Service Kit 75-115HP 2.1L 8M0097854. The Mercury 75-115HP 2.1L 100 Hour Service Maintenance Kit - 8M0097854 includes the essential components required to perform the recommended 100-hour maintenance on Mercury 75 HP, 90 HP, and 115 HP 2.1L four-stroke outboards. This convenient service kit provides the necessary engine oil, filtration components, and seals required to keep your outboard operating smoothly and reliably.. Routine maintenance at the 100-hour interval helps maintain proper lubrication, ensures clean fuel delivery, and protects the gearcase from wear. By bundling the key service components into one kit, this package simpl