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 175-300HP V6 V8 8M0149929. The Mercury 175-300HP V6 (3.4L) & V8 (4.6L) FourStroke 100 Hour Service Kit - 8M0149929 provides the essential components required to perform routine 100-hour maintenance on Mercury FourStroke outboards ranging from 175 horsepower to 300 horsepower. This convenient maintenance kit includes marine engine oil, high performance gear lube, and the key filters and seals needed to keep your outboard operating smoothly.. Routine 100-hour service helps maintain proper lubrication, protect engine components from wear, and ensure reliable fuel delivery. By combining the required maintenance items into one