Changing your own oil is one of the most approachable jobs in car care. It teaches you where things are, it costs less than most shop visits once you own the basic tools, and it gives you a good look underneath the car at least a couple of times a year. It is also a job where a few small mistakes, like a loose drain plug, a double-stacked filter gasket, or a car balanced on the wrong support, can cause real damage or injury. The goal here is to do it slowly and correctly, not quickly.

This guide walks you through the whole job from start to finish: what to buy, how to lift the car safely, how to drain and refill, how to check your work, and how to get rid of the used oil legally. It is written for someone doing this for the first time, so nothing is skipped. Every vehicle is a little different, so keep the owner’s manual open next to you for the oil type, capacity, torque values, and lift points. If at any point something feels beyond you, stopping and handing it to a certified mechanic is a perfectly good decision.

Key takeaways

  • Use the oil viscosity and specification printed in your owner’s manual, and the filter listed for your engine.
  • Never work under a car supported only by a jack. Use jack stands on solid, level ground, or use drive-on ramps rated for your vehicle.
  • Warm the engine briefly, then let it sit so the oil drains well without being scalding hot.
  • Do not overtighten the drain plug or the filter, and never reuse a worn crush washer if the manual calls for a new one.
  • Refill in stages and check the dipstick, rather than pouring in the full capacity and hoping.
  • Recycle used oil and the old filter at an auto parts store or local collection site; never dump them.

Before you start: is this a good DIY job for you?

Who should do it and who should not

If you can follow a recipe, use a wrench, and keep calm when a little oil gets on the garage floor, you can change oil. You should skip it, or at least get help from someone experienced, if you have no safe, level place to work, no way to lift the car securely, a medical condition or injury that makes crawling under a car risky, or a vehicle with a complicated underbody, such as a very low sports car or some luxury cars with hard-to-reach filters and skid plates. Some newer vehicles also require a scan tool to reset the oil-life monitor, which is still easy for most people but worth knowing about first.

How long it takes and what it costs

Plan on one to two hours your first time, mostly because you will be reading, double-checking, and cleaning up. After a few repeats, it becomes a 30 to 45 minute task. The cost is the oil, a filter, and a one-time tool investment. Prices vary a lot by region and vehicle, so check local stores instead of trusting a number from a guide. The real savings come over the years, and the real benefit is knowing the job was done right.

Check the manual first

Look up four things in your owner’s manual: the recommended oil viscosity (such as 5W-30 or 0W-20), the oil specification or standard it must meet, the total capacity including the filter, and the correct service interval for your driving style. Some engines are fussy about oil type, and some turbocharged or direct-injection engines have specific requirements. When in doubt, the manual and the label on the oil filler cap are your sources.

Tools and supplies

The essentials

  • Fresh oil in the right viscosity and specification, enough for the full capacity plus a little extra for topping off.
  • A new oil filter that matches your engine, and a new drain plug washer or gasket if your vehicle uses one.
  • A socket or box-end wrench that fits the drain plug, and a torque wrench if you can borrow or buy one.
  • An oil filter wrench that fits your filter style (cap-style, strap, or pliers type).
  • A drain pan large enough to hold more than the full oil capacity, with some margin for splashing.
  • A funnel, shop rags or paper towels, and disposable nitrile gloves.
  • Safety glasses.
  • Jack stands rated for your vehicle and a floor jack, or a pair of sturdy drive-on ramps.
  • Wheel chocks, and a sealable container for the used oil.

Nice to have

A flashlight or headlamp, a flattened cardboard sheet to lie on and to catch drips, cat litter or an absorbent product for spills, a creeper, and a small mirror to find the drain plug. A large, clean pour spout or a funnel with a long neck can keep oil out of tight engine bays.

Choosing the right oil and filter

Oil comes in conventional, synthetic blend, and full synthetic formulations. Your manual says which is required. Many modern engines call for synthetic. Using a higher-grade oil than the minimum usually is not harmful, but using a lower grade than required can be. Pick a filter designed for your engine; a filter that screws on in the wrong thread size, or has the wrong bypass valve rating, can cause leaks or low oil pressure. If you are unsure, the parts counter can look it up by year, make, model, and engine.

Set up your workspace safely

Choose the spot

You want flat, hard, level ground, such as a concrete driveway or garage floor. Avoid soft ground, steep slopes, and asphalt on a hot day, because jack stands can sink into soft asphalt. Make sure the area is well lit and ventilated. If you are in a garage, open the door before you start the engine, and do not let a running engine idle in a closed space, because carbon monoxide builds up quickly.

Lifting the car

There are two safe approaches. Drive-on ramps are simple: line them up, drive up slowly, set the parking brake, and chock the rear wheels. Make sure the ramps are rated for your vehicle’s weight and that your tires fit the ramp width. The second approach uses a floor jack and jack stands. Find the manufacturer’s jacking points in the manual, raise the car with the jack, and place a jack stand under each approved support point. Lower the car slowly until its weight rests on the stands, and give it a firm shake to verify it is stable.

A jack is a lifting tool, not a holding tool. Hydraulic jacks can fail or slip, and every year people are seriously hurt or killed by crawling under a car held by a jack alone. Never place any part of your body under a car until it is resting securely on stands or ramps. Keep the jack under the vehicle as a backup, but trust the stands. If you are not sure you have set things up safely, stop and ask someone with experience to check it.

Hot parts and burn risk

An engine that just ran has hot oil, a hot exhaust, and hot hardware. Used oil can be scalding, and the exhaust manifold and catalytic converter can burn skin on contact. Let the car sit for 10 to 20 minutes after warming up so the oil is warm and thin but not painfully hot. Wear gloves, and keep your arms and face away from the drain stream.

Step by step: changing the oil

Step 1: Warm the engine a little

Run the engine for two to three minutes, or take a short drive. Warm oil drains faster and carries more suspended debris out of the engine with it. Do not drive for a long time and make the oil very hot. Turn the engine off, set the parking brake, and let it sit.

Step 2: Raise and secure the vehicle

Chock the wheels that remain on the ground, lift the car using the method above, and confirm it is stable on stands or ramps before you begin. Remove the oil filler cap on top of the engine now; letting air in helps the oil drain smoothly.

Step 3: Find the drain plug and set the pan

Slide under the car with the flashlight and find the oil pan, a metal or plastic reservoir at the bottom of the engine, with a single bolt at its lowest point. Position the drain pan slightly forward of the plug, because oil often comes out in an arc before it settles into a straight stream. If you are unsure which bolt is the drain plug, check the manual or a repair guide for your model, because the transmission pan has bolts of its own, and removing the wrong one is a mistake you want to avoid.

Step 4: Remove the drain plug

Use the correct size socket or box wrench, pushing so that you break the plug loose with the wrench in a way that does not slip. Once it is loose, unscrew it by hand the last few turns, pulling it away quickly as the oil begins to flow. Let it drain completely, which may take five to fifteen minutes. While you wait, wipe the plug, inspect the threads, and check the washer. Many washers are single-use crush washers that should be replaced every time.

Step 5: Remove the old filter

Move the pan under the filter, which holds some oil. Use the filter wrench to turn it counterclockwise until loose, then spin it off by hand, keeping the open end facing up as you lower it so oil does not spill everywhere. Make sure the old rubber gasket came off with the filter. A gasket stuck on the engine surface, combined with the new filter’s gasket, causes a serious leak. Wipe the mounting surface clean with a rag.

Step 6: Prepare and install the new filter

Dip a clean finger in fresh oil and lightly coat the new filter’s rubber gasket. This helps it seat and makes the filter easier to remove next time. If the filter is mounted vertically and you can do so without spilling, you may pour a little fresh oil into it, but do not overfill. Thread the filter on by hand until the gasket touches the surface, then tighten about three-quarters of a turn more, or follow the instructions printed on the filter. Do not use a wrench to tighten a spin-on filter unless the manufacturer says to. Cartridge-style filters, found in some cars, have their own housing with a specific torque value; follow the manual.

Step 7: Reinstall the drain plug

Once the oil has slowed to a drip, clean the plug and the area around the opening. Install a new washer if required, thread the plug in by hand to avoid cross-threading, and then snug it with the wrench. If you have a torque wrench, use the value listed in the manual. If not, tighten firmly but not with all of your strength. Overtightening can strip the threads in the oil pan, which is an expensive repair, and a loose plug can drop out on the road. Wipe the area clean so that any later leak will be obvious.

Step 8: Lower the car and add new oil

Remove tools and the drain pan from beneath the vehicle, raise the car slightly if needed, remove the stands, and lower it to the ground. Place the funnel in the filler opening and pour in about three-quarters of the capacity listed in the manual. Wait a minute for it to settle. Do not simply pour in the full capacity at once, because filters hold some oil and capacities in the manual may differ slightly.

Step 9: Check the level

Pull the dipstick, wipe it, reinsert it fully, and pull it again to read the level. Add small amounts and recheck until the oil reaches the upper mark without going over. Overfilling can cause foaming and may harm the engine, so stop at the full mark. Put the filler cap back on firmly.

Step 10: Start the engine and look for leaks

Start the car and let it idle for about a minute. The oil pressure light should go out within a few seconds. If it stays on, shut the engine off right away and recheck the oil level and the filter. While the engine runs, look under the car at the drain plug and filter for drips. Turn off the engine, wait a few minutes for the oil to settle in the pan, and check the dipstick again. Top off if necessary.

Step 11: Reset the service reminder and record the job

Many cars have a maintenance reminder or oil-life monitor that must be reset after an oil change. Your manual describes the procedure. Write down the date, the mileage, the type of oil, and the filter you used in your maintenance log so you will know when the next change is due.

What to do with the used oil and filter

Why you must not dump it

Used motor oil contains metals and combustion byproducts and is a serious pollutant. A small amount can contaminate a large volume of water. Pouring it on the ground, in a storm drain, or in household trash is harmful and illegal in most areas.

Where to take it

Pour the used oil from your drain pan into a clean, sealable container with a tight lid, such as the empty jug the new oil came in. Many auto parts stores accept used oil and filters at no cost, as do many municipal recycling centers and household hazardous waste collection sites. Call ahead to confirm they accept it and ask about any quantity limit. Drain the old filter upside down for a day so that most of the oil comes out before you take it in. Keep the containers upright, secure, and out of reach of children and pets during the drive.

Cleaning up spills

Cover small spills with cat litter or an absorbent, let it soak, sweep it up, and dispose of it the way your community recommends for oil-soaked waste. Clean your hands with soap and water, because used oil can irritate skin. Launder oily rags separately and dry them safely; oily rags can self-heat and ignite if piled up, so lay them flat to dry or store them in a metal container as recommended.

How often should you change your oil?

The old 3,000-mile rule belongs to an earlier generation of engines and oils. Many modern vehicles specify intervals of 5,000 to 10,000 miles (8,000 to 16,000 km) or six to twelve months, whichever comes first. If you do a lot of short trips, drive in extreme heat or cold, tow, or crawl through traffic, the shorter end is wiser. Always follow the owner’s manual, or the oil-life monitor if your car has one. Do not stretch beyond a year, because oil degrades with time even if the odometer does not move much.

Reading the signs on the dipstick

What you see What it may mean What to do
Amber to light brown oil Fresh or lightly used Normal; continue the schedule
Dark brown or black Oil is working and holding contaminants Normal for used oil; change on schedule
Milky or foamy, tan Possible coolant or moisture contamination See a certified mechanic soon
Gritty or with metal flecks Possible internal wear Have it inspected by a mechanic
Level below the lower mark Low oil or consumption Top off and monitor; see a mechanic if it recurs

Common mistakes

  • Relying on a jack alone. Use jack stands or ramps every time you go under a vehicle.
  • Using the wrong oil. The viscosity and specification in the manual matter, particularly for turbocharged and newer engines.
  • Leaving the old gasket on the engine. This causes the dreaded double-gasket leak and can empty an engine of oil in minutes.
  • Overtightening the drain plug or filter. It can strip threads or crush the filter and make removal a headache.
  • Undertightening them. A drain plug or filter that works loose on the road can ruin an engine.
  • Overfilling the engine. More is not better. Stop at the full mark.
  • Forgetting to refill. It sounds silly, but starting an engine with no oil is a known and costly mistake. Always check the dipstick before you start.
  • Draining the wrong pan. Transmission and differential plugs look similar. Confirm which is which.
  • Skipping the final leak check. Look again after a short drive and again the next day.
  • Dumping used oil. Take it to a collection site.

Troubleshooting after the change

The oil light stays on

If the red oil pressure light stays on after you start the engine, shut it off immediately. Check the dipstick for a low level, and look for an obvious leak or a loose filter. If the level is fine and the light stays on, do not drive the car. Have it towed to a certified mechanic. An oil pressure warning is a red light that must never be ignored.

Oil on the ground or a burning smell

A small drip from a spill during the change may burn off the exhaust and produce a brief smell. A growing puddle or dripping, however, means you should check the filter and drain plug right away. If you cannot find the source, do not keep driving, and get help.

The filter is stuck or the plug is stripped

A filter that will not budge, or a drain plug whose threads feel mushy, is a sign to stop. Forcing it risks damaging the pan. A shop has tools and replacement parts, such as an oversize plug or a thread repair, to handle these problems properly.

A short safety checklist

  1. Level, firm ground, parking brake on, wheels chocked.
  2. Car supported by jack stands or ramps, and tested with a firm push.
  3. Engine warm but not hot, with gloves and glasses on.
  4. Correct drain plug identified, pan positioned with room for splash.
  5. Old filter gasket removed, new gasket lightly oiled.
  6. Drain plug and filter tightened correctly.
  7. Oil added in stages and checked on the dipstick.
  8. Engine started, leaks checked, oil light confirmed off.
  9. Used oil and filter taken to a recycling site.

When to call a professional

There is no shame in handing off oil changes, and certain situations call for it. See a certified mechanic if:

  • You cannot safely lift or support the vehicle.
  • The drain plug or filter is stuck, stripped, or cross-threaded.
  • The oil looks milky, foamy, or contains metal particles.
  • The oil pressure light stays on or flickers, or you hear knocking from the engine.
  • Your vehicle is a hybrid or an electric-assisted model with high-voltage components nearby.
  • You are working on a vehicle still under warranty and are unsure of the documentation required.
  • You notice significant oil consumption between changes or smoke from the exhaust.
  • Your engine requires special tools, a scan tool for service resets, or has a hard-to-reach filter.

Frequently asked questions

Can I mix different brands or types of oil?

In a pinch, topping off with a different brand of the same viscosity and specification will not cause an immediate problem. For a full change, use the specified oil. Mixing is a short-term fix, not a plan.

Do I need to change the filter every time?

Yes. The filter holds oil and contaminants, and leaving the old one on defeats much of the purpose of the change.

Is synthetic oil worth it?

If your manual requires it, yes. If it only recommends conventional oil, synthetic is optional and often allows longer intervals, but follow the interval in the manual unless the oil-life monitor tells you otherwise.

What if I put in too much oil?

A small overfill is often tolerable, but a large one can cause foaming and damage. If the level is well above the full mark, drain a little through the plug or have a mechanic do it.

Can I change oil when the engine is cold?

You can, but it drains more slowly and less completely. A brief warm-up is better, and a hot engine is dangerous.

How much oil does my car take?

The capacity is listed in your owner’s manual and is often printed in the specifications section. Four to six quarts is common for many passenger cars, but check yours.

How do I dispose of an old filter?

Drain it for at least a day, then take it with the used oil to a collection point. Many recycling centers crush filters and reclaim the steel.

Will doing my own oil changes void the warranty?

Generally not, as long as you use the correct oil and filter, follow the interval, and keep receipts and a log. Review your warranty booklet if you have questions.

The first oil change is the hardest, mostly because you do not yet know how it will go. By the second, you will know where the plug is, how tight is tight enough, and how much the car really needs. Take your time, keep the stands under the car, write down what you did, and let the oil drip a little longer than feels necessary. If something goes sideways, a certified mechanic has seen it before and will help you sort it out.