4-Stroke Oil

Advanced ZDDP additive technology controls phosphorus depletion extending catalyst life. Completes and transcends FC-W catalyst and FC-W specifications satisfies or surpasses API SM category requirements. It is an ultra-high performance oil that utilizes...

Sierra offers a whole line of direct replacement weight oils specifically blended to protect your engine in the harsh marine environment and the extreme load conditions your engine endures every time you push down on the throttle. A gallon size, case of...

Quicksilver 4-stroke marine oil has been carefully tested in Mercury and Mariner outboards and MerCruiser sterndrives to offer outstanding corrosion and wear protection. Clean oil is critical for decreasing friction and preventing internal component...

Engine oil is the lifeblood of any machine, piece of equipment, or vehicle, as it allows the machines/equipment to perform at their best. The engine oil cools, cleans, and evenly lubricates the engine's moving parts. It prevents metal components from...

15W40 MULTI-VEHICLE (5 QT) - 18-9554-4 specifically developed for the heavy-duty inboard marine industry, including cruiser and towboats, 5 Quart Size, Case of 4. The API service categorization SM's performance requirements are met. It is not advisable...

Because it powers your on-water excursions, maintaining the engine of your boat is essential to making the most of your time on the water. For lifespan and performance, it's essential to use the best oil and fuel. This 10W-40 FC-W SEMI SYNTH, QUART...

This 10W-30 is high-performance motor oil, the formula that meets or surpasses the demanding needs of marine four-stroke engines. It has superior base stock and highly refined additives. Applicable for four-stroke outboard motor oil. 10W-30 has a high...

Sierra Marine Catalyst Premium Blend 4-stroke engine oils were created to meet the needs of today's 4-stroke recreational engines, whether or not they contain emission catalyst systems. This product aids in maintaining the boat engine's excellent...

Under heavy weights and operating stress, the 25W-50 FC-W LITER provides optimum protection. This NMMA FC-W Certified/API-SL 25W-50 superior quality synthetic blend engine oil is designed specifically for Mercury Verado engines. To deliver quality...

Synthetic Blend 4 Stroke Outboard Oil 1 Liter from SeaStar Solutions is created for the severe challenges of the marine environment and is formulated with premium-grade synthetic and mineral-based stock, as well as excellent engineered additives. Piston...

Sierra provides a complete range of direct replacement weight oils specially formulated to preserve your engine in the demanding maritime environment and under the intense load circumstances encountered each time you depress the throttle. Catalyst...

Be prepared to protect the engine in the most demanding marine conditions with the new 20W-40 FC-W Outboard Oil Quart 118-9450-2. It meets or surpasses OE specifications for outboard oil and is formed to substitute the 10W-30 in warmer climates. It has...