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 8M0232733. Stay on schedule with a complete 100 hour service kit for Mercury 40/50/60 HP EFI 4-stroke outboards using 25W-40 four-stroke oil. This kit bundles the essentials for an oil change and gearcase service in one order, including fresh gear lube, the correct oil filter, and both fuel filters to help support clean lubrication and consistent fuel delivery. New sealing washers are included to help reduce the chance of seepage after service.. Supersedes: 8M0090558. Serial number requirement: 1C453840 and up. What's Included in This Kit. 1x 25W-40 Four Stroke Oil (Gallon). 1x Gear Lube (Quart). 1x Oil Filter. 1x Low P