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. Quicksilvers exclusive formulation offers extreme protection for mid- to high- horsepower outboard engines. Continued use this oil will: Provide outstanding wear and corrosion protection which help extend engine life Minimize performance-robbing carbon deposits Maintain peak engine performance and reliability Recommended for use in oil-injected, carbureted or electronic fuel injected (EFI) mid to high horsepower outboard and jet-drive engines.