Sierra - SAE 30 Full Synthetic Marine Engine Oil - 5 Quart - 2 Pack - 94104 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. Sierra 94104 SAE 30 Full Synthetic Marine Engine Oil 5 Quart - 2 Pack Replaces Volvo and OMC A special blend of synthetic base oil and a balanced additive system that exceeds the FC-W requirements for marine engine oil. Recommended for gasoline and diesel inboard and sterndrive engines. Superior engine protection during startups, operation and storage. Reduces oil consumption and improves fuel economy. 2-Pack Size - 5-Quart