Mercury Outboard Engine Oil Capacities & Oil Filter Chart

Mercury Outboard Engine Oil Capacities & Oil Filter Chart

PartsVu’s Mercury Outboard Engine Oil Capacities & Oil Filter chart is a handy reference for finding the correct oil capacity and oil filter for your specific Mercury outboard engine. Simply select your engine family, then make sure you are reviewing the correct engine model, horsepower, and serial number range before ordering parts or adding oil.

Mercury outboard oil capacity can vary by engine family, model year, displacement, and filter change requirements. Use the chart as your starting point, add oil gradually, run the engine briefly, allow the oil to settle, and confirm the final level with the dipstick. Avoid overfilling, and always use Mercury or Quicksilver marine oil that meets the recommended NMMA FC-W specification for your engine.

Common Mercury Outboard Oil Capacity Examples

A Mercury 115 hp 4-stroke outboard typically takes about 5.5 US quarts, or 5.2 liters, of oil with a filter change on many modern 2.1L models. Capacity can vary by year and engine family, so fill gradually and confirm the final level with the dipstick.

A modern Mercury 115 hp 4-stroke outboard commonly holds about 5.5 US quarts, or 5.2 liters, of oil with a new filter. Older versions may differ slightly, so the engine serial number and dipstick should be used to confirm the correct fill level.

A Mercury 115 Pro XS 2.1L FourStroke typically has an oil capacity of about 5.5 US quarts, or 5.2 liters, with a filter change. Use NMMA FC-W certified marine oil and check the dipstick after running the engine to avoid underfilling or overfilling.

A Mercury 150 FourStroke or 150 Pro XS typically uses about 6.3 US quarts, or 6.0 liters, of engine oil with a filter change. Always use the recommended FC-W marine oil, avoid overfilling, and confirm the level on the dipstick after running the engine.

Most Mercury 40 hp 4-stroke EFI outboards take about 3.0 liters, or 3.17 US quarts, of engine oil. Because some oil remains in the engine during a normal change, add oil gradually, run the motor briefly, and verify the level with the dipstick.

A Mercury 60 hp 4-stroke outboard typically holds about 3.0 liters, or 3.17 US quarts, of engine oil. Use the recommended Mercury or Quicksilver marine 4-stroke oil, replace the filter if required, then run the engine and confirm the level on the dipstick.

Most modern Mercury 9.9 hp 4-stroke outboards take about 27 fluid ounces, or 0.8 liters, of engine oil. Older models may have different capacities, so use the model year or serial number to confirm the correct amount and verify with the dipstick.

A Mercury 25 hp 4-stroke oil capacity varies by model year and displacement, but many newer models take about 1.9 US quarts, or 1.8 liters, with a filter change. Always verify by serial number and check the dipstick after filling.

Mercury Verado 300 oil capacity depends on the engine generation, with many models taking roughly 7.0–7.4 US quarts with a filter change. Use Mercury-approved FC-W marine oil and confirm the correct level with the dipstick after running the engine.

A Mercury 200 Pro XS 4-stroke typically takes about 7.0 US quarts, or 6.6 liters, of engine oil with a filter change. Because refill amounts can vary depending on drainage, add slightly less first, run the engine, and use the dipstick to set the final level.

Mercury Lower Unit and Power Trim Fluid Notes

Also, for your convenience, we offer Mercury gear lube kits that include everything you need when it is time to change your gear lube.

A Mercury 90 hp lower unit typically takes about 22.5–24 ounces of marine gear lube, depending on the exact model and gearcase. Fill from the bottom drain hole until clean oil exits the upper vent, and replace the drain and vent screw seals.

Mercury power trim systems usually require less than 1 quart of approved power trim and steering fluid for a standard refill. Fill with the motor trimmed up according to the service procedure, then cycle the trim to purge air and recheck the fluid level.

Important Note About Mercury Mariner Vehicle Oil Capacity

Some searches for Mercury oil capacity refer to the Mercury Mariner SUV, not Mercury Marine outboards. A 2009 Mercury Mariner SUV oil capacity depends on engine type: the 2.5L four-cylinder typically takes about 4.5 quarts, while the 3.0L V6 takes about 6.0 quarts with a filter change. This refers to the vehicle, not a Mercury outboard.

A 2008 Mercury Mariner with the 3.0L V6 engine typically takes about 6.0 US quarts of oil with a filter change. This capacity applies to the Mercury Mariner vehicle, so it should not be confused with Mercury Marine outboard oil capacities.

How to Use This Mercury Oil Capacity Chart

• Select your Mercury outboard engine family.
• Confirm your exact horsepower, model, and serial number range.
• Review the listed oil capacity and oil filter recommendation.
• Add slightly less than the listed oil capacity at first.
• Run the engine briefly on a proper water supply, let the oil settle, and confirm the final level with the dipstick.

Ever ask yourself why using Mercury marine precision engine oils and lubricants is so important? Check out our Guide to Mercury Marine Precision Oils & Lubricants to learn more about choosing the right products for your Mercury outboard.