Older marine engines need lubricants that are hard to find today. What to do? Liqui Moly offers a solution with its new Marine Single-Grade SAE 30 oil for both gas and diesel engines. This classic mineral-based oil provides a stable lubrication film under all operating temperature conditions for maximum wear protection. Plus, it contains unique additives to prevent sludge formation and protect against corrosion. $28.49 per 4.23-quart bottle; liqui-moly.com
