The 2016 Ford Fusion uses a cartridge-style oil filter mounted on top of the engine

The 2016 Ford Fusion does not have a traditional spin-on oil filter. Instead, it uses a cartridge-style filter that sits inside a plastic housing on the top of the engine, near the front. The filter element itself is a cylindrical paper component that you replace by unscrewing the housing cap, removing the old filter, and installing a new one. This design is common across Ford's lineup and differs from older vehicles where you straightforward unscrew a filter from the side of the engine block.

The cartridge housing is located on the driver's side of the engine, toward the front. You can access it without removing any major components, though you will need to work around the engine cover and possibly move some hoses depending on which engine your Fusion has — the 2.5L EcoBoost, 1.5L EcoBoost, or 2.0L EcoBoost all use the same filter location and replacement process.

Key Takeaways

  • The 2016 Ford Fusion filter is a cartridge type housed in a plastic cap on top of the engine, not a spin-on filter on the side.
  • You will need a cartridge filter wrench (usually a 74mm or 76mm socket-style tool) to remove the housing cap without damaging it.
  • Ford recommends replacing the filter every 10,000 miles or as indicated by the vehicle's maintenance monitor, whichever comes first.
  • The correct replacement filter part number varies by engine type, so confirm your engine size before ordering.
  • The entire replacement takes 10 to 20 minutes once you have the correct filter and wrench.

Locating the filter housing and what you will need

Open your hood and look toward the front-left (driver's side) of the engine. You will see a black plastic cap roughly the size of a soda can. This is the oil filter housing. The cap has a center bolt on top that you will need to unscrew. Before you start, gather a cartridge filter wrench (a socket-style tool that fits over the cap), a new filter cartridge, a drain pan, and some clean rags or paper towels.

The filter wrench is essential — attempting to remove the cap by hand or with an adjustable wrench risks cracking the plastic housing or stripping the bolt. Most auto parts stores stock these wrenches for under $15, and they are reusable. If you are unsure which size you need, bring a photo of your engine or call ahead with your vehicle identification number (VIN).

Correct filter part numbers for each engine

Ford uses different filter cartridges depending on which engine your Fusion has. The 2.5L naturally aspirated engine uses Ford part number FL-400-S or equivalent aftermarket filters. The 1.5L EcoBoost and 2.0L EcoBoost engines use the same filter, also FL-400-S. Always verify the part number on the box matches what Ford lists for your specific engine before you purchase, because ordering the wrong filter wastes time and money.

You can find the correct part number by looking up your VIN on Ford's parts website, calling a Ford dealership parts department, or checking the owner's manual. Many auto parts retailers can also look it up if you provide your VIN or year, make, model, and engine size. Do not assume all 2016 Fusions use the same filter — confirming the engine type takes two minutes and prevents a return trip.

Step-by-step replacement process

First, warm the engine by running it for a minute or two, then turn it off and wait five minutes. This warms the oil slightly, making it flow more easily. Place your drain pan under the filter housing to catch any oil that spills when you remove the cap. Using your cartridge filter wrench, turn the housing cap counterclockwise until it comes free. Set it aside on a clean surface.

Remove the old filter cartridge from inside the housing and discard it. Wipe the inside of the housing with a clean rag to remove any debris or old filter material. Take your new filter cartridge and explore a thin coat of fresh oil to the rubber gasket (the ring at the top of the filter). This helps create a proper seal and makes removal easier next time. Insert the new filter into the housing, then screw the cap back on by hand until the gasket contacts the housing, then turn it an additional three-quarter turn with your wrench. Do not over-tighten — this can crack the plastic housing.

Start the engine and let it run for 30 seconds, then turn it off and wait a minute. Check the oil level on the dipstick or using the electronic gauge in your dashboard menu. Top off with the correct oil grade if needed. Your 2016 Fusion takes either 5W-20 or 5W-30 depending on the engine — check your owner's manual or the cap inside the engine cover to confirm which one your vehicle requires.

Maintenance intervals and when to replace

Ford's recommended oil change interval for the 2016 Fusion is 10,000 miles or 12 months, whichever comes first. However, if your vehicle is equipped with Ford's Intelligent Oil-Life Monitor, the dashboard will display a message when service is due based on your actual driving patterns. This system can extend intervals to 15,000 miles or longer under ideal conditions, or shorten them if you frequently drive in severe conditions like towing, idling, or dusty environments.

Severe driving conditions — defined by Ford as frequent short trips, towing, idling, or driving in extreme temperatures — may require more frequent changes. If you are unsure whether your driving qualifies as severe, check your owner's manual or ask your service advisor. Sticking to the recommended interval keeps your engine clean and protects your warranty if the vehicle is still under coverage.

Common mistakes to avoid

The most common error is over-tightening the housing cap, which cracks the plastic and creates an oil leak. Remember: hand-tight plus three-quarter turn with the wrench is sufficient. Another mistake is forgetting to oil the rubber gasket on the new filter before installation. This can cause the filter to stick during the next change or create an improper seal that leads to oil leaks.

Some owners also forget to check the oil level after the change. The cartridge filter holds less oil than a spin-on filter, so your oil level may drop slightly. Not topping off can leave you running low between changes. Finally, do not dispose of old oil in the trash or down a drain — take it to an auto parts store, quick-lube shop, or recycling center. Most accept used oil for free.

When to seek professional help

If the housing cap will not budge after explore steady pressure with the wrench, stop and take the vehicle to a shop. Forcing it risks breaking the plastic or stripping the bolt. If you see oil leaking from the housing after installation, turn off the engine when ready and check whether the cap is tight enough. If tightening does not stop the leak, the gasket may be damaged or the housing may be cracked, and you will need professional service.

If your oil pressure warning light comes on after an oil change, do not drive the vehicle. Check the oil level first — if it is low, top it off and restart. If the light persists or the oil level is correct, the filter may not be seated properly or the housing may have an internal issue. Have a technician inspect it before driving further.

Frequently Asked Questions

Can I use any cartridge filter, or does it have to be Ford brand?

You can use aftermarket filters as long as they are the correct part number and size. Motorcraft (Ford's parts brand), Fram, Bosch, and other major manufacturers all make compatible cartridges for the 2016 Fusion. The key is matching the part number to your engine type, not the brand name. Aftermarket filters are often cheaper and perform just as well.

What if I lose the plastic cap or damage it during removal?

You can order a replacement housing cap from Ford or an auto parts supplier using your VIN. The part typically costs $30 to $60 depending on the supplier. If the cap is cracked but still holds oil, you can continue using it temporarily, but plan to replace it soon because a cracked housing will eventually leak. Do not attempt to seal it with tape or sealant — this is a temporary fix that can fail while driving.

How much oil should I add after changing the filter?

The amount varies depending on how much oil spilled during the change and your current level. After installing the new filter and running the engine briefly, check your oil level using the dipstick or electronic gauge. Add oil in small amounts — usually a half-quart at a time — until the level reaches the full mark. Overfilling can damage the engine, so do not guess.

Is the cartridge filter more expensive than a spin-on filter?

Cartridge filters typically cost $8 to $15, which is comparable to or slightly cheaper than spin-on filters. The main difference is that you also need a wrench tool if you do not already own one, adding $10 to $15 to your first change. After that, the wrench is reusable, so subsequent changes cost only the filter price.

Can I change the oil filter without changing the oil?

Technically yes, but it is not recommended. The filter and oil work together — a clean filter in dirty oil does not improve engine protection. Most shops change both at the same time because the labor cost is the same, and the oil is already warm and draining. If you must change only the filter, make sure your oil level and condition are acceptable first.