The 2015 F-150 2.7L uses Motorcraft FL-2051S or equivalent filters

The 2015 Ford F-150 equipped with the 2.7-liter EcoBoost engine takes the Motorcraft FL-2051S oil filter. This is Ford's OEM (original equipment manufacturer) filter for that engine and model year. You can also use any filter that meets Ford's WSS-M2C931-A specification, which includes filters from Fram, Bosch, and other manufacturers that carry this certification.

The filter threads onto the engine block on the driver's side, below the intake manifold. It is a spin-on cartridge style, meaning you unscrew the old one by hand and screw the new one on until the rubber gasket contacts the block, then turn it an additional three-quarter turn. Do not use a filter wrench to tighten it — hand-tight is correct.

Oil capacity for the 2.7L EcoBoost is 5.7 quarts with a filter change. If you are only topping off without changing the filter, you will need less. Always check the dipstick after adding oil to confirm you are at the full mark.

Key Takeaways

  • The OEM filter for a 2015 F-150 2.7L EcoBoost is the Motorcraft FL-2051S, available at Ford dealerships and most auto parts retailers.
  • Any filter marked WSS-M2C931-A meets Ford's specification for this engine, so you have options beyond the OEM part.
  • The filter capacity is 5.7 quarts of oil total when you change both the filter and the oil.
  • Hand-tighten the new filter until the gasket contacts the block, then turn it three-quarter turn more — do not use a wrench.

Where the filter is located and how to access it

On the 2015 F-150 2.7L, the oil filter is mounted on the driver's side of the engine block, positioned below the intake manifold. You can reach it from above the engine bay without removing other components, though you may need to remove the plastic engine cover first depending on your truck's configuration.

The filter sits vertically with the threaded opening facing down toward the block. When you unscrew it, oil will drain into the pan below, so place a drain pan underneath before you begin. Some owners find it easier to drain the oil from the pan plug first, then remove the filter while the engine is still warm — this helps the oil flow out of the filter housing more completely.

Motorcraft FL-2051S versus aftermarket alternatives

The Motorcraft FL-2051S is Ford's factory filter and carries a higher price than many aftermarket options. It is designed specifically for Ford's EcoBoost engines and meets all OEM specifications. If you prefer to stay with Ford parts, this is the correct choice.

Aftermarket filters from Fram, Bosch, Purolator, and others are widely available and cost less. Look for the WSS-M2C931-A specification on the box or product page — this is Ford's published standard, and any filter carrying it will work correctly in your 2015 F-150 2.7L. The main differences between filters at this level are the filter media material and the anti-drainback valve design, but all certified options will protect your engine adequately.

Some owners prefer synthetic or high-flow filters, which cost more but claim longer service intervals or better flow characteristics. For a 2015 F-150 with the 2.7L, standard oil change intervals are 10,000 miles with synthetic oil or 5,000 miles with conventional, so the filter choice does not extend those intervals beyond what Ford recommends.

Oil type and capacity for the 2.7L EcoBoost

Ford specifies 5W-30 synthetic oil for the 2015 F-150 2.7L EcoBoost. The engine is turbocharged and runs hotter than naturally aspirated engines, so synthetic oil's thermal stability is important. Using conventional 5W-30 is not recommended by Ford for this engine, though some owners have done so without when ready damage — the risk is shorter oil life and potential sludge buildup over time.

Total capacity is 5.7 quarts when you change both the oil and filter. If you are topping off between changes, add oil in half-quart increments and check the dipstick after each addition. Overfilling can cause the engine to aerate the oil and reduce its protective properties, so staying at or slightly below the full mark is safer than overfilling.

Oil change interval and maintenance schedule

Ford's recommended oil change interval for the 2015 F-150 2.7L EcoBoost is 10,000 miles when using synthetic oil, or 5,000 miles with conventional oil. The filter should be changed every time you change the oil. Some owners extend intervals to 12,000 or 15,000 miles with synthetic, but Ford does not officially support this for the 2.7L, so you do so at your own risk.

The 2.7L is a relatively new engine for 2015, so long-term data on extended intervals is limited compared to Ford's older engines. If you tow frequently or drive in dusty conditions, Ford recommends the shorter 5,000-mile interval regardless of oil type. Check your owner's manual for the maintenance schedule specific to your driving conditions.

Common mistakes when changing the filter

The most common error is over-tightening the filter. Because the filter sits in a tight space and is difficult to reach, owners often use a filter wrench to tighten it, which crushes the rubber gasket and causes leaks. The gasket is designed to seal when hand-tight plus three-quarter turn — anything more will damage it and require you to remove and reinstall the filter.

Another mistake is forgetting to fill the new filter with oil before installation. Some owners pre-fill the filter by pouring oil into the threaded opening, which helps the engine get oil pressure faster on startup. This is optional but not harmful. If you do pre-fill, pour slowly and let it drain into the filter housing to avoid spilling.

A third issue is installing the filter upside down or cross-threading it. The filter only threads one way, so if you feel resistance before the gasket contacts the block, stop and check the angle. Cross-threading will strip the threads on the block and require a helicoil repair.

Where to buy the correct filter

The Motorcraft FL-2051S is available at Ford dealerships, Amazon, RockAuto, AutoZone, O'Reilly Auto Parts, and Advance Auto Parts. Prices vary by retailer and whether you buy online or in-store. Dealerships typically charge more but may provide the part is genuine. Online retailers often have lower prices but may take several days to ship.

Aftermarket filters meeting the WSS-M2C931-A specification are available at the same retailers and usually cost 30 to 50 percent less than the OEM Motorcraft filter. If you are unsure which aftermarket filter to buy, call the retailer or check the product page for the WSS-M2C931-A marking.

Frequently Asked Questions

Can I use a different oil filter if I cannot find the FL-2051S?

Yes. Any filter marked WSS-M2C931-A will work in your 2015 F-150 2.7L. This specification is Ford's published standard, and filters from Fram, Bosch, Purolator, and other brands carry it. Check the box or product listing for this marking before you buy.

What happens if I use 10W-30 instead of 5W-30?

The 2.7L EcoBoost is turbocharged and runs hot, so Ford specifies 5W-30 for cold-start flow and thermal protection. Using 10W-30 will flow more slowly in cold weather and may not protect the turbo adequately during startup. Stick with 5W-30 synthetic as Ford recommends.

How often should I check my oil level between changes?

Check the dipstick monthly or before long trips. The 2.7L EcoBoost can consume oil over time, especially if you tow or drive at high RPM. If the level drops more than one quart between 10,000-mile changes, have the engine inspected for leaks or internal wear.

Is it necessary to pre-fill the new filter with oil?

Pre-filling is optional. It helps the engine get oil pressure faster on the first startup after a change, which is beneficial for turbo engines. If you do pre-fill, pour slowly into the threaded opening and let it drain into the housing. Do not overfill the filter itself.

Can I change the oil and filter myself, or should I go to a shop?

The 2015 F-150 2.7L oil change is straightforward for someone with basic mechanical skills. You need a drain pan, a filter wrench (optional but helpful), and a way to dispose of the old oil. Many auto parts stores accept used oil for free. If you are unsure about any step, a shop can do it for $50 to $100 depending on your area.