Shop Marine Oil, Lube, grease and Marine Lubricants. Oils and lubricants are at the heart of engine care and maintenance, we stock a wide selection of marine engine oils, lubricants and grease to ensure the smooth running of your boat engine. Outboard Oils e Lubricants, Boat Gear Lubricants. Fuel Treatment Products. marine Diesel Oil. premium lubricant designed to give excellent performance in two-cycle and four cycle outboard engines