🔧 Focus - Engine Oil & Oil Filter Replacement

This service drains the old engine oil and replaces the oil filter so your Focus has clean lubrication and proper oil pressure. It’s one of the best DIY maintenance jobs to prevent engine wear and keep the oil life on track.

Difficulty Level: Beginner | Estimated Time: 0.5-1.5 hours

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⚠️ Safety & Precautions

• ⚠️ Work on level ground and support the car with jack stands before going underneath.
• ⚠️ Let the engine cool 15-30 minutes; hot oil can burn you.
• ⚠️ Wear gloves and safety glasses; oil can irritate skin and eyes.
• ⚠️ Keep rags handy and clean spills quickly; oil is slippery.
• ⚠️ No battery disconnect is required for this service.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• Drain pan (at least 8-quart)
• 8mm socket
• 1/4" drive ratchet
• Flat trim tool
• 15mm socket
• 3/8" drive ratchet
• Torque wrench (10-100 Nm range)
• Oil filter wrench
• Funnel
• Shop rags

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Engine oil (5W-20 full synthetic) - Qty: 5 quarts
• Oil filter - Qty: 1
• Oil drain plug gasket - Qty: 1

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📋 Before You Begin

• Park your Focus on level ground and set the parking brake.
• Place wheel chocks behind the rear wheels.
• Warm the engine for 2-3 minutes, then shut it off. Warm oil drains faster.
• Open the hood and remove the oil filler cap by hand to help the oil drain smoothly.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise and support the front of the car

• Lift the front of your Focus using a floor jack at the correct front jacking point.
• Set it down securely on jack stands.
• Give the car a small shake to confirm it’s stable before you go underneath.

Step 2: Remove the lower splash shield (if equipped)

• Under the engine, remove the splash shield fasteners using an 8mm socket with a 1/4" drive ratchet.
• If any plastic clips are present, pop them out with a flat trim tool.
• Set the shield and hardware aside so you don’t lose anything.

Step 3: Drain the engine oil

• Place your drain pan (at least 8-quart) under the oil pan drain plug.
• Remove the drain plug using a 15mm socket and 3/8" drive ratchet.
• Let the oil drain until it slows to an occasional drip (usually 5-10 minutes).
• Clean the drain plug and install a new oil drain plug gasket.

Step 4: Reinstall and torque the drain plug

• Thread the drain plug in by hand first to avoid cross-threading.
• Tighten with a torque wrench (10-100 Nm range): Torque to 28 Nm (21 ft-lbs).
• Do not overtighten—oil pans strip easily.

Step 5: Remove and replace the oil filter

• Move the drain pan under the oil filter area (it will spill a little).
• Loosen the old filter using an oil filter wrench, then spin it off by hand.
• Make sure the old rubber gasket comes off with the old filter (it can stick to the engine).
• Put a light film of new oil on the new filter gasket using a gloved finger.
• Install the new filter by hand until the gasket contacts, then tighten by hand an additional 3/4 turn.

Step 6: Reinstall the splash shield

• Reinstall the shield using the 8mm socket and 1/4" drive ratchet.
• Reinstall any clips using the flat trim tool to seat them.

Step 7: Refill the engine with oil

• Lower the car off the jack stands using the floor jack.
• Insert a funnel into the oil fill opening.
• Add engine oil (5W-20 full synthetic), starting with about 4.5 quarts.
• Reinstall the oil filler cap by hand.

Step 8: Start, check for leaks, and set the level

• Start the engine and let it idle for 30-60 seconds.
• Shut the engine off and look underneath for leaks at the drain plug and oil filter.
• Wait 5 minutes, then check the dipstick and top off as needed to reach the full mark.
• Wipe spilled oil with shop rags.

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✅ After Repair

• Recheck for leaks after a short 5-10 minute drive.
• Dispose of used oil and the old filter at an oil recycling drop-off (many auto parts stores accept it).
• If your Focus has an oil life reminder, reset it using the instrument cluster controls (message center).

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💰 DIY vs Shop Cost

Shop Cost: $90-$160 (parts + labor)

DIY Cost: $35-$70 (parts only)

You Save: $55-$90 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.