You can change your car's motor oil yourself in about 30 to 45 minutes with basic tools and a new filter

Motor oil lubricates your engine, reduces friction, and carries away heat and debris. Over time it breaks down and loses its ability to protect your engine, which is why manufacturers recommend changing it every 3,000 to 10,000 miles depending on your vehicle and oil type. Doing it yourself costs roughly the price of the oil and filter — usually $20 to $50 — versus $50 to $100 at a shop. The process is straightforward: drain the old oil, replace the filter, add new oil, and check the level.

Key Takeaways

  • You need an oil drain pan, wrench, oil filter wrench, new oil (check your owner's manual for the correct type and amount), and a new filter.
  • Warm up your engine for a few minutes before draining so the oil flows faster, but let it cool enough that you can touch the drain plug without burning yourself.
  • The oil filter is hand-tight only — turn it by hand until snug, then add another three-quarter turn; over-tightening damages the seal.
  • Check your oil level with the dipstick after the engine has been off for at least five minutes and is parked on level ground.

What you need to gather before you start

Collect your supplies before you get under the car. You will need a new oil filter (the correct one for your vehicle), new motor oil in the grade and viscosity your owner's manual specifies, an oil drain pan large enough to hold all the old oil, a wrench or socket that fits your drain plug, an oil filter wrench, and rags or paper towels. A jack and jack stands are necessary if your car sits too low to fit a drain pan underneath, though many vehicles have enough clearance without lifting.

Find your owner's manual or look up your vehicle online to confirm the oil type, capacity, and drain plug size. Common grades are 5W-30 and 10W-40; the numbers matter because they affect how the oil flows in cold and hot conditions. Buying the wrong viscosity can reduce fuel economy or leave your engine unprotected. Most auto parts stores can tell you the correct filter and oil if you give them your vehicle's year, make, and model.

Warm the engine and locate the drain plug

Start your engine and let it run for three to five minutes. Warm oil flows faster than cold oil and drains more completely, which means less old oil stays behind in the engine. Do not let the engine get so hot that you cannot touch the drain plug — aim for warm to the touch, not hot.

Turn off the engine and wait a minute or two. Locate the drain plug underneath the engine; it is a bolt protruding from the lowest point of the oil pan. If you cannot find it, check your owner's manual or search online for a diagram of your specific vehicle. Position your drain pan directly under the plug before you loosen it.

Drain the old oil and replace the filter

Use your wrench or socket to loosen the drain plug by turning it counterclockwise. Once it is loose enough to turn by hand, carefully unscrew it the rest of the way. Oil will pour out, so keep your hands clear and let it drain into the pan. Once the flow slows to a drip, wipe the drain plug clean with a rag and screw it back in by hand. Tighten it snugly with your wrench — do not over-tighten, which can strip the threads or crack the pan.

Locate the oil filter, which is usually a cylindrical canister on the side of the engine. Place your drain pan underneath it to catch the oil that spills when you remove it. Use an oil filter wrench to loosen it by turning counterclockwise, then unscrew it by hand. Some oil will drip out, so work slowly. Wipe the rubber gasket surface on the engine clean with a rag. Apply a thin layer of new oil to the rubber gasket on the new filter, then screw it on by hand until the gasket contacts the engine. Turn it another three-quarter turn and stop — hand-tight is correct. Over-tightening crushes the gasket and causes leaks.

Add new oil and check the level

Locate the oil filler cap on top of the engine; it usually has an oil can symbol on it. Unscrew it and set it aside. Pour in the amount of new oil your owner's manual specifies, usually between 4 and 6 quarts. Pour slowly and stop partway through to check the dipstick so you do not overfill.

Replace the oil filler cap. Start the engine and let it run for 30 seconds to circulate the new oil through the filter and engine. Turn it off and wait at least five minutes for the oil to settle back into the pan. Pull out the dipstick, wipe it clean on a rag, reinsert it fully, then pull it out again to read the level. The oil should be between the minimum and maximum marks. If it is low, add a small amount and check again. If it is overfull, you will need to drain some out.

Dispose of old oil properly

Used motor oil cannot go in the trash or down the drain — it contaminates soil and water. Most auto parts stores accept used oil for free, even if you did not buy supplies from them. Pour the old oil from your drain pan into a clean container with a lid, then take it to a participating store. Some recycling centers and service stations also accept it. Call ahead to confirm hours and whether they have space available.

When to call a professional instead

If your drain plug is stuck or rounded off, if you cannot locate the filter, or if you do not have safe access under your vehicle, take it to a shop. Some vehicles have plastic undertrim that must be removed to reach the drain plug, which adds time and complexity. If your engine is still hot enough to burn you or if you are uncomfortable working under a car, a professional oil change is worth the cost. There is no shame in handing this off — the risk of injury or damage is real if you rush or skip steps.

Frequently Asked Questions

How often should I change my oil?

Check your owner's manual for the manufacturer's recommendation. Most modern vehicles with synthetic oil can go 7,500 to 10,000 miles between changes, while older vehicles or those using conventional oil may need a change every 3,000 to 5,000 miles. Severe driving conditions like towing or frequent short trips may require more frequent changes.

Can I mix different oil brands or types?

Mixing brands is generally safe as long as the viscosity and type (conventional, synthetic blend, or full synthetic) are the same. Mixing conventional and synthetic oil is acceptable in a pinch, though it reduces the benefits of synthetic. Never mix different viscosities like 5W-30 and 10W-40, as this can damage your engine.

What if I spill oil on the ground?

Contain it immediately with absorbent material like kitty litter or oil absorbent pads, available at auto parts stores. Sweep it up and dispose of it as hazardous waste. Do not hose it down or let it run into storm drains. If a large spill reaches soil or water, contact your local environmental agency.

Do I need to change the oil filter every time I change the oil?

Yes. The filter traps contaminants and degrades over time. Reusing an old filter defeats the purpose of an oil change and can leave debris in your engine. A new filter costs $5 to $15 and is essential to the process.

What should I do with the old oil filter?

Most auto parts stores accept used oil filters for free. Some recycling centers do as well. Call ahead to confirm. Do not throw it in the trash — it still contains oil and is considered hazardous waste in most places.