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Draining oil from a car is a core step in an oil change, but doing it safely takes more than removing a drain plug. The engine must be prepared, the vehicle supported correctly, and the used oil collected and recycled. The exact procedure varies by make and model, so the owner’s manual should guide oil capacity, oil type, filter choice, and tightening specifications. This step-by-step guide explains how to drain engine oil while avoiding common spills, burns, and vehicle damage.

What Draining Engine Oil Involves

Engine oil circulates through the engine to reduce friction, carry heat, and help control contaminants. During an oil change, the old oil drains from the oil pan through a threaded drain plug. The oil filter is generally replaced at the same time because it holds contaminants and may retain some old oil.

Draining oil alone does not complete an oil change. The engine needs the correct replacement oil, and the oil level must be checked after refilling. Running an engine with too little oil can cause severe damage. For that reason, oil should not be drained unless the car can be refilled before it is started again.

Tools and Supplies to Gather

Collect the supplies before starting so the car is not left raised or open while someone searches for equipment. The vehicle’s owner’s manual or a reliable service guide can identify the correct oil, filter, drain-plug procedure, and capacity.

• Oil drain pan: Choose a pan large enough for the engine’s oil capacity, with extra room to prevent splashing.
• Correct replacement oil and filter: Match the viscosity grade and performance specification listed in the owner’s manual or oil cap. Select a filter designed for the vehicle.
• Wrench or socket: Use the correct size for the drain plug. A six-point socket can help reduce the chance of rounding the plug.
• Oil-filter wrench: Needed for some filter designs; the type depends on the vehicle and filter.
• Replacement drain-plug washer: Some vehicles require a new crush washer or sealing gasket after removal.
• Vehicle support equipment: Use ramps or a jack and properly rated jack stands on firm, level ground if access underneath is necessary.
• Protective equipment: Wear safety glasses and oil-resistant gloves. Keep shop towels or absorbent material nearby.
• Funnel and sealed containers: These help with refilling and transporting used oil for recycling.

Before You Begin: Safety and Preparation

Check the vehicle’s instructions

Look up the vehicle-specific oil-change directions before raising the car. Drain-plug locations, underbody panels, oil-filter positions, oil capacities, and tightening requirements differ. Some cars use a cartridge filter beneath a separate housing; others have a spin-on filter. A few vehicles also have procedures that require special tools or a particular service mode.

Do not guess at oil capacity or drain-plug torque. Overtightening can strip threads or damage the oil pan, while undertightening can allow leaks. If a drain plug is damaged, unusually difficult to remove, or inaccessible without specialized equipment, professional service is the safer option.

Warm the oil modestly

Oil drains more readily when it is warm, but hot oil can burn skin. If the car has been driven, park it and allow the engine and exhaust components to cool until they can be approached safely. A short, gentle drive may warm the oil; extended driving is unnecessary. Never work beneath a running vehicle, and never reach near a hot exhaust system.

Park and support the car safely

Park on a firm, level surface, turn off the engine, set the parking brake, and keep the key or fob away from the ignition. If the car needs to be raised, follow the manufacturer’s lifting points. Use properly rated ramps or jack stands and chock the wheels that remain on the ground.

Never rely on a hydraulic jack alone to support a vehicle. Do not work underneath a car on soft, sloped, or unstable ground. If the car cannot be supported securely or there is not enough clearance to work safely, use a professional service shop.

How to Drain Oil From a Car

1. Locate the drain plug and oil filter

With the vehicle safely positioned, locate the engine oil pan and its drain plug using the service information. The oil pan is usually beneath the engine, but covers or underbody panels may hide it. Remove a panel only as directed, keeping track of its fasteners. Confirm that the plug you have found is the engine-oil drain plug, not a transmission, differential, or other fluid plug.

Identify the oil filter before draining. Depending on the vehicle, it may be accessible from above or below. Planning where the oil will flow from both the drain opening and filter helps prevent a spill.

2. Position the drain pan

Place the drain pan under the plug, allowing for the stream to change direction as the oil exits. If the car is angled on ramps or stands, the flow may travel farther than expected. Make sure the pan can hold the engine’s full oil capacity and cannot slide or tip.

3. Remove the drain plug carefully

Use the correct wrench or socket to loosen the plug. Once it turns freely, finish removing it by hand while keeping pressure against the plug. Pull it away quickly as the oil starts flowing, then place it somewhere clean. Avoid dropping it into the drain pan, where it may be difficult to retrieve.

Let the oil drain until it becomes a slow drip. There is usually no need to leave the engine open for an extended period. Do not start the engine to force oil out. Starting it without adequate oil can damage internal components very quickly.

4. Replace the oil filter

Follow the filter manufacturer’s instructions and the vehicle’s service procedure. Oil may spill when the filter is removed, so move the drain pan beneath it if needed. Check that the old filter’s rubber gasket came off with the filter. If the old gasket remains stuck to the engine, a new filter can fail to seal properly and leak.

For a spin-on filter, lightly coat the new gasket with clean engine oil if the filter instructions call for it. Tighten by hand as directed; do not use a wrench to overtighten it. Cartridge filters may require a new O-ring and a specific installation procedure. Use the correct filter and sealing parts for the vehicle.

5. Reinstall the drain plug

Wipe the drain-plug opening and inspect the plug and threads. Replace the sealing washer if the manufacturer recommends it or the old washer is damaged. Start the plug by hand to reduce the risk of cross-threading. Tighten it to the vehicle’s specified torque using a torque wrench when a torque value is provided.

Do not substitute excessive force for the correct specification. A stripped oil-pan thread can turn a routine oil change into a costly repair. If the plug will not thread smoothly by hand, stop and check for misalignment or damaged threads.

6. Lower the vehicle and refill the engine

Before lowering the car, confirm that the drain plug and filter are installed. Remove tools and the drain pan from underneath, then lower the vehicle using the proper procedure. Add the specified oil through the filler opening with a clean funnel. Start with slightly less than the stated capacity if the manual’s procedure calls for a final dipstick check, since oil can remain in the engine and filter.

Wait as directed by the manufacturer, then check the dipstick on level ground. Add oil gradually until the level reaches the indicated range; do not overfill. Some vehicles use an electronic oil-level system rather than a dipstick, so follow the display and owner’s manual instructions.

7. Check for leaks and verify the level

Start the engine and let it run briefly while checking the oil-pressure warning light and looking for leaks around the filter and drain plug. Shut off the engine if the oil-pressure warning stays on, if oil is visibly leaking, or if the engine makes an unusual noise. Do not continue driving until the cause has been addressed.

Turn the engine off and wait the period specified in the owner’s manual before checking the level again. Add small amounts if needed. Recheck the area around the plug and filter, and inspect it again after a short drive. Keep an eye on the oil level over the next few days, especially if the vehicle has not been serviced this way before.

Common Mistakes to Avoid

• Draining the wrong fluid: Confirm the plug location using vehicle-specific information before loosening anything.
• Working under an unsecured car: Ramps or jack stands must be appropriate for the vehicle and placed at approved support points.
• Draining hot oil: Warm oil flows well, but hot oil can cause serious burns. Allow time for safer working temperatures.
• Reusing a damaged gasket: A worn or incorrect sealing washer can lead to a slow leak.
• Overtightening the plug or filter: Excessive force can damage threads, housings, or seals.
• Forgetting the refill: Confirm the drain plug and filter are installed, refill with the specified oil, and verify the level before starting or driving.
• Overfilling: Too much oil can also cause engine problems. Use the dipstick or the vehicle’s prescribed electronic check.
• Ignoring a warning light or leak: Stop the engine and investigate rather than assuming the light will clear on its own.

How to Dispose of Used Motor Oil

Used motor oil should not be poured onto the ground, into a storm drain, or down a household drain. It can contaminate soil and water. Keep it separate from other fluids, such as antifreeze, gasoline, brake fluid, or solvent, because mixing can make recycling more difficult or prevent a collection site from accepting it.

Pour the cooled oil into a clean, leak-proof container with a secure lid. Do not use a container that held chemicals or food. Many auto-parts stores, service stations, municipal recycling programs, and household hazardous-waste facilities accept used motor oil, although local limits and rules vary. Call ahead to confirm accepted materials, quantity limits, and hours. The U.S. Environmental Protection Agency explains used-oil management at EPA.gov.

Used oil filters may also be recyclable, but acceptance varies by location. Drain the filter as directed by local collection rules and bring it to an appropriate facility if accepted. The Earth911 recycling locator can help find nearby options; residents can also check their city or county waste-management website.

When to Have a Professional Drain the Oil

Professional service is appropriate when the vehicle cannot be lifted safely, the drain plug is seized or damaged, the oil pan threads are stripped, or the procedure calls for specialized equipment. It is also sensible when oil is leaking, the oil-pressure warning light is on, or the engine may have been run with too little oil.

Some newer vehicles have access panels, underbody shields, cartridge-filter housings, or electronic oil-level checks that make the process less straightforward. A qualified technician can follow the correct service procedure and inspect for leaks or other maintenance concerns. For any vehicle, the owner’s manual remains the primary reference for oil specification, capacity, service intervals, and safety instructions.

Quick Reference: Oil-Draining Checklist