The 2018 Ford Fusion typically uses a 14mm socket for the oil drain plug. Always confirm the exact size for your engine variant in the owner's manual before starting work.
The Fusion was offered with several engines in 2018 (such as 1.5L EcoBoost, 2.0L EcoBoost, 2.5L iVCT, and the hybrid version). While the drain plug is commonly 14mm across these engines, some vehicles or aftermarket plugs may differ in head type or size. If the 14mm socket doesn’t fit, inspect the plug for markings or consult the service manual for the correct size.
Engine options and drain plug sizes
Here is a quick reference for the common 2018 Fusion engines and the drain plug sizes you’re likely to encounter. When in doubt, verify with the service manual.
- 1.5L EcoBoost: drain plug head typically 14 mm (M14x1.5).
- 2.0L EcoBoost: drain plug head typically 14 mm (M14x1.5).
- 2.5L iVCT (non-hybrid): drain plug head typically 14 mm (M14x1.5).
- Hybrid: drain plug head typically 14 mm (M14x1.5); verify if your model uses a slightly different plug.
In practice, a 14mm socket will fit the drain plug for most 2018 Fusion models. If the plug looks unusual or refuses to fit, stop and verify the size before applying force.
DIY oil-change steps
If you're changing the oil yourself, here’s a straightforward procedure for removing the drain plug and refilling the oil.
- Warm up the engine briefly, then park on a level surface and engage the parking brake.
- Place a drain pan under the oil pan to catch the used oil.
- Gather a 14mm socket (6-point preferred), a ratchet, and a new drain plug washer if required by your plug.
- Loosen and remove the drain plug by turning counterclockwise with the 14mm socket, letting the oil drain completely into the pan.
- Inspect the drain plug and pan for damage or debris, then reinstall with a new washer if needed.
- Tighten the drain plug to the manufacturer’s torque specification (do not overtighten).
- Replace the oil filter if needed, reinstall the drain plug, and refill with the correct oil grade and quantity for your engine.
- Run the engine for a minute, check for leaks around the drain plug, then recheck the oil level and top up as necessary.
Dispose of used oil responsibly and recycle properly. Always use the recommended oil type for your engine and reset oil-change indicators if applicable.
Additional notes
Important reminders to keep in mind when performing an oil change on a 2018 Fusion:
- Engine variations may slightly alter the drain plug size; rely on the service manual for your exact variant.
- Consider replacing the drain plug washer if your plug uses one.
- Never attempt an oil change with the engine hot; allow it to cool for several minutes to minimize burns and avoid hot oil splashes.
If you’re uncertain about the plug type on your specific Fusion trim, consult the owner’s manual or a Ford dealership for confirmation.
Summary
For most 2018 Ford Fusion models, the oil drain plug uses a 14mm socket. Confirm the exact size for your engine variant in the manual and follow the proper oil-change procedure to ensure a safe, leak-free seal.