Mercury Marine Engine Care

Mercury Marine Engine Care, Maintenance & Service Products

Keep your Mercury-powered boat performing at its best with Mercury Marine engine care products from West Marine. Routine outboard maintenance can help protect engine performance, reliability, and service life throughout the boating season. Shop Mercury and Quicksilver engine oil, gear lube, oil filters, fuel filters, fuel additives, spark plugs, lubricants, corrosion protection, maintenance kits, and other products for servicing compatible Mercury outboard and marine engines.

Explore Mercury Marine Engine Maintenance Products

Mercury Outboard Engine Oil

Protect critical engine components with the correct Mercury outboard engine oil for your motor. Mercury and Quicksilver offer marine engine oils formulated for compatible FourStroke, Verado, Pro XS, and other Mercury engines. Always use the oil type and viscosity specified for your particular engine model and operating conditions.

Mercury 4-Stroke Outboard Oil

Mercury 4-stroke outboard oil is formulated for the operating demands of compatible marine engines. Regular oil and filter changes help remove contaminants and maintain proper lubrication throughout the engine. Check your Mercury owner's manual for the recommended oil specification, capacity, and service interval.

Mercury 2-Stroke Outboard Oil

For compatible two-stroke engines, shop Mercury and Quicksilver 2-stroke marine oil designed for the lubrication requirements of applicable outboards. Select the correct oil based on your engine manufacturer's specifications, including required TC-W3 or other applicable performance requirements.

Mercury Oil Filters

Complete routine oil changes with a compatible Mercury Marine oil filter. Oil filters help remove contaminants from engine oil as it circulates through the lubrication system. Because filter requirements vary between engines, use your Mercury engine model and serial number to identify the correct replacement filter.

Mercury Gear Lube & Lower Unit Maintenance

Mercury High Performance Gear Lube

Protect gears and bearings in compatible lower units with Mercury or Quicksilver High Performance Gear Lube. Marine gear lubricants are designed for the demanding loads and operating conditions found in outboard and sterndrive gearcases. Always use the lubricant specified for your engine or drive.

Mercury Lower Unit Gear Oil

Changing Mercury lower unit gear oil is an important part of routine outboard maintenance. Used lubricant should be inspected for signs of water intrusion, unusual discoloration, or metal contamination. Follow Mercury's recommended procedures and service intervals for your specific engine and gearcase.

Gear Lube Pumps & Maintenance Accessories

Make lower-unit service easier with compatible gear lube pumps, drain screw seals, gaskets, and maintenance accessories. Using the proper tools and replacement seals can help simplify routine gearcase maintenance and reduce the risk of leaks after servicing.

Mercury Fuel System Care

Mercury Fuel Filters

Mercury fuel filters help remove contaminants from fuel before they reach sensitive engine components. Depending on your boat and engine, the fuel system may include engine-mounted filters, water-separating fuel filters, or other filtration components. Replace filters according to Mercury maintenance recommendations.

Mercury Water-Separating Fuel Filters

A water-separating fuel filter can help protect compatible marine engines by filtering contaminants and separating water from fuel before it reaches the engine. Regular inspection and replacement are particularly important in marine environments where moisture and condensation can affect fuel systems.

Mercury Fuel Additives & Treatments

Maintain compatible gasoline fuel systems with Mercury and Quicksilver fuel additives. Fuel treatments can help address storage, fuel stability, corrosion, and deposits depending on the specific product. Choose an additive appropriate for your engine, fuel type, and intended use.

Mercury Quickare, Quickleen & Quickstor

Mercury and Quicksilver offer specialized fuel treatments for different maintenance needs. Quickare is designed for ongoing fuel-system treatment, Quickleen helps address deposits within compatible fuel systems and engines, and Quickstor is formulated for fuel stabilization during storage. Follow product directions for proper treatment ratios and applications.

Mercury Outboard Maintenance Kits

Simplify routine service with a Mercury outboard maintenance kit containing compatible components for common engine maintenance tasks. Depending on the kit, contents may include oil filters, fuel filters, drain seals, spark plugs, thermostats, anodes, impellers, or other service parts required for specific Mercury engines.

Mercury 100-Hour Service Kits

A Mercury 100-hour service kit can make it easier to gather compatible parts for scheduled maintenance. Required service varies by engine, model year, hours, and operating conditions, so consult your Mercury maintenance schedule before beginning service.

Mercury 300-Hour Service Kits

More comprehensive maintenance intervals may require additional inspections and replacement components. Compatible Mercury 300-hour service kits can provide many of the parts needed for scheduled service on select engines. Verify kit compatibility using your engine serial number.

Mercury Spark Plugs & Tune-Up Parts

Mercury Outboard Spark Plugs

Replace worn plugs with the correct spark plugs for your Mercury outboard. Spark plug type and gap specifications vary by engine, so use your engine model, serial number, and Mercury service information to determine the appropriate replacement.

Mercury Thermostats & Cooling System Parts

Proper cooling is essential to outboard engine performance. Mercury thermostats, water pump components, and cooling-system maintenance parts help maintain appropriate operating temperatures in compatible engines. Inspect and service cooling components according to the manufacturer's maintenance schedule.

Mercury Water Pump Impellers

The water pump impeller is a critical component of many outboard cooling systems. Impellers can wear over time and should be inspected or replaced according to Mercury's recommended service schedule and operating conditions.

Mercury Marine Lubricants & Corrosion Protection

Mercury 2-4-C Marine Lubricant

Use compatible Mercury and Quicksilver marine grease and lubricants for specified fittings and moving components. Marine lubricants are formulated for exposure to water and demanding boating conditions. Follow your engine's maintenance instructions to determine which lubricant is required at each service point.

Mercury Corrosion Protection

Saltwater, moisture, and the marine environment can accelerate corrosion on engine components. Mercury corrosion protection products, proper freshwater flushing, routine cleaning, and inspection of sacrificial anodes can all play a role in maintaining an outboard used in saltwater.

Mercury Engine Storage & Fogging Products

Prepare compatible engines for extended storage with appropriate Mercury engine storage products. Depending on the engine and storage conditions, preparation may include treating the fuel, changing fluids, lubricating specified components, protecting against corrosion, and following engine-specific storage procedures.

Mercury Engine Care for Popular Outboards

Mercury FourStroke Maintenance

Routine Mercury FourStroke maintenance can include engine oil and filter changes, gear lube service, fuel filter replacement, spark plug inspection, cooling-system maintenance, anode inspection, lubrication, and other scheduled procedures. Maintenance requirements vary by engine horsepower and model.

Mercury Verado Maintenance

Keep compatible Mercury Verado outboards properly maintained with the recommended fluids, filters, spark plugs, lubricants, and service parts. Refer to your specific Verado owner's manual and maintenance schedule before performing routine or seasonal service.

Mercury Pro XS Maintenance

Maintain your Mercury Pro XS outboard with compatible Mercury and Quicksilver engine care products. High-performance applications still require regular oil, filtration, gearcase, cooling, ignition, and fuel-system maintenance according to the manufacturer's recommendations.

How to Find the Right Mercury Engine Care Products

Use Your Mercury Outboard Serial Number

Your Mercury engine serial number is one of the best ways to identify compatible maintenance parts. Engines with similar horsepower ratings can require different filters, spark plugs, impellers, thermostats, and other components depending on model and production range.

Check Your Mercury Maintenance Schedule

Follow the maintenance schedule provided for your specific Mercury engine. Service requirements can be based on operating hours, elapsed time, or both and may vary with operating conditions. Engines used heavily in saltwater, fishing, commercial service, or other demanding environments may require additional attention.

Choose Compatible Mercury & Quicksilver Products

Mercury and Quicksilver offer engine oils, gear lubricants, filters, fuel treatments, maintenance parts, and other products designed for compatible Mercury engines. Always verify that the specific product meets the requirements listed for your engine before use.

Frequently Asked Questions About Mercury Marine Engine Care

How often should I service my Mercury outboard?

Service intervals depend on the Mercury engine model, operating hours, age, and conditions of use. Many maintenance procedures are scheduled by operating hours or annually, whichever occurs first. Consult the maintenance schedule in your engine owner's manual for the requirements that apply to your specific outboard.

What oil does a Mercury 4-stroke outboard use?

The correct oil depends on your Mercury engine model and operating conditions. Mercury and Quicksilver offer 4-stroke marine engine oils for compatible outboards. Check your owner's manual for the required oil specification, viscosity, capacity, and change interval.

How often should I change the oil in my Mercury outboard?

Oil-change intervals vary by engine. Follow the maintenance schedule for your specific Mercury outboard and consider both engine hours and elapsed time. The oil filter is typically serviced according to the engine manufacturer's specified maintenance schedule as well.

How often should I change Mercury lower unit gear oil?

Follow Mercury's service schedule for your specific gearcase. Gear lube should also be inspected for signs of water contamination, unusual color, metal particles, or other conditions that could indicate a problem requiring additional inspection.

What is the difference between Mercury Quickare, Quickleen and Quickstor?

Mercury and Quicksilver formulate these fuel treatments for different purposes. Quickare is intended for ongoing fuel treatment, Quickleen helps address deposits, and Quickstor is designed for fuel stabilization during storage. Follow the instructions on each product for the correct application and treatment ratio.

What is included in a Mercury 100-hour service?

The exact requirements depend on the engine. A scheduled service may include engine oil and filter changes, gear lube service, fuel-system inspection, filter replacement, lubrication, spark plug inspection, anode inspection, and checks of cooling and other engine systems. Consult the service schedule for your specific Mercury outboard.

How do I find the right oil filter for my Mercury outboard?

Use your Mercury engine model and serial number to identify the correct oil filter. Do not rely only on horsepower because engines with the same horsepower rating can use different filters depending on model family and production year.

How often should I replace a Mercury water pump impeller?

Impeller replacement intervals depend on the engine, hours of operation, water conditions, and manufacturer recommendations. Inspect and replace water pump components according to Mercury's maintenance schedule and address any signs of reduced cooling-water flow promptly.

How do I maintain a Mercury outboard used in saltwater?

Saltwater maintenance can include freshwater flushing when recommended, cleaning salt residue, checking anodes, inspecting for corrosion, lubricating specified components, and keeping up with scheduled engine, gearcase, fuel-system, and cooling-system service. Follow the procedures provided for your specific Mercury engine.

How do I winterize or store a Mercury outboard?

Storage preparation varies by engine and climate but may include fuel treatment, fluid changes, corrosion protection, battery care, lubrication, cooling-system procedures, and other engine-specific steps. Follow Mercury's storage instructions for your exact outboard rather than using a one-size-fits-all procedure.

Shop Mercury Marine Engine Care Products at West Marine

Shop Mercury Marine engine care products at West Marine for routine outboard maintenance, seasonal service, and engine protection. Find Mercury and Quicksilver engine oil, 4-stroke oil, 2-stroke oil, High Performance Gear Lube, oil filters, fuel filters, fuel additives, spark plugs, water pump components, lubricants, corrosion protection, maintenance kits, and other service products. Whether you're maintaining a Mercury FourStroke, Verado, Pro XS, or another compatible Mercury engine, find the products you need to keep your outboard ready for your next day of boating or fishing.