Oil Change Checklist: Everything You Need Before, During, and After

You know how to change oil. What you need is a quick-reference checklist you can pull up in the garage so you don't forget the drain plug washer, buy the wrong filter, or skip the post-change leak check. This is that checklist — supplies, steps, and verification in one place. Print it, bookmark it, or log the result in GarageHub when you're done.

1. Gather your supplies

Before you get under the car, confirm you have everything. A missing filter or wrong oil viscosity means a trip to the parts store mid-job.

• Engine oil — correct viscosity and quantity per your owner's manual (e.g. 5W-30, 5 quarts). Check the oil cap or manual, not the internet.
• Oil filter — match by part number for your year/make/model. OEM or quality aftermarket (Wix, Purolator, Bosch).
• Drain plug washer — copper crush washers should be replaced every time. Metal washers can go 2–3 uses if not deformed. Cost: $0.50–1.00.
• Drain pan — minimum 6-quart capacity. Enclosed pans with a pour spout make recycling easier.
• Socket wrench — the correct size for your drain plug (usually 14 mm, 17 mm, or 19 mm).
• Oil filter wrench — cap-style or band-style, sized for your filter. You won't need it for installation, only removal.
• Funnel — wide-mouth to avoid spills at the filler cap.
• Jack stands or ramps — never work under a car supported only by a jack. Ramps are faster for oil changes.
• Nitrile gloves and rags — used oil is a carcinogen. Gloves are not optional.

2. Pre-change checks

Two minutes of prep prevents the most common oil change mistakes.

• Warm the engine — run it for 2–3 minutes. Warm oil drains faster and carries more contaminants out. Don't run it hot or you'll burn yourself on the exhaust.
• Park on level ground — so oil drains completely and the dipstick reads accurately afterward.
• Engage the parking brake — especially on ramps. Wheel chocks on the rear tires add a safety margin.
• Verify oil spec one more time — check the bottle label against the manual. Wrong viscosity is the most common DIY oil change mistake.
• Record current mileage — you'll need it for your service log. Check the odometer before you start.

3. Drain the old oil

The drain is straightforward, but rushing it leaves dirty oil behind.

• Position the drain pan — offset it slightly toward the rear. Oil arcs out at an angle when the plug is first removed.
• Remove the drain plug — loosen with the socket, then finish by hand. Keep your hand above the stream — if the plug drops into the pan, that's fine.
• Let it drain fully — minimum 5 minutes, 10 is better. The difference is about a quarter-cup of dirty oil that otherwise stays in your engine.
• Inspect the drain plug — check the threads for damage. Replace the washer if it's copper crush or visibly deformed.
• Clean the drain area — wipe the threads on the oil pan with a clean rag before reinstalling.

4. Replace the oil filter

The filter swap is where most DIY leaks originate. Take 60 extra seconds here.

• Remove the old filter — keep the drain pan underneath. Filters hold ¼ to ½ a quart of oil.
• Check the old gasket — make sure the rubber O-ring came off with the old filter. A double-gasket (old one stuck on the engine + new one on the filter) will leak immediately.
• Prep the new filter — apply a thin film of new oil to the rubber gasket with your finger. Proper seal, easier removal next time.
• Hand-tighten only — spin the filter on until the gasket contacts the surface, then turn ¾ to 1 full turn by hand. Don't use the wrench to tighten — over-tightening distorts the gasket.

5. Add new oil

Pour carefully and check the level before closing the hood.

• Reinstall the drain plug — hand-tight first to avoid cross-threading, then torque to spec (usually 25–30 ft-lbs). Don't gorilla it.
• Add oil through the filler cap — pour one quart less than total capacity first. Easy to add more; removing excess is a pain.
• Wait and check — let the oil settle for 2 minutes, then check the dipstick. Add in quarter-quart increments until you reach the full mark.
• Replace the filler cap — hand-tight, listen for the click. A loose filler cap causes oil mist in the engine bay.

6. Post-change verification

This is the step people skip. Don't. A leak at the drain plug or filter will empty your engine in minutes.

• Start the engine — the oil pressure light should go off within 3–5 seconds. If it stays on for more than 10, shut off immediately and check for leaks.
• Let it idle for 2 minutes — this fills the new filter and circulates oil through the engine.
• Check for leaks — look at the drain plug and the filter. A drip means it needs to be snugged. A steady stream means something is wrong — shut off and investigate.
• Shut off and recheck level — wait 2 minutes, pull the dipstick. The level will drop slightly because the filter is now full. Top up if needed.
• Final check after 10 minutes — one last look underneath. If the ground is dry, you're good.

7. Clean up and log the service

The job isn't done until you've disposed of the old oil and recorded what you did.

• Transfer used oil — pour from the drain pan into a sealed container (the new-oil bottles work). Don't mix with other fluids.
• Recycle properly — most auto parts stores (AutoZone, O'Reilly, Advance) accept used oil for free. Never pour it down a drain or in the trash.
• Reset the oil life monitor — if your car has one, reset it now. The procedure is in your manual.
• Log the service — record the date, mileage, oil spec (brand + viscosity), filter part number, and total cost. That data makes your next oil change faster and tells a buyer you maintained the car.