How Do You Change Oil In A Car

Changing your car’s oil is a fundamental maintenance task that keeps your engine running smoothly for years to come. Learning how do you change oil in a car is a great way to save money and understand your vehicle better. With the right tools and a bit of time, you can complete this job yourself.

This guide will walk you through the entire process, from gathering supplies to disposing of the old oil. We’ll cover everything you need to know to perform a safe and effective oil change.

Before you slide under your vehicle, you need to prepare. Having everything ready makes the job faster and safer. The first step is gathering all the necessary tools and materials.

Tools And Materials You Will Need

You cannot start an oil change without the correct items. Here is a comprehensive list of what you should collect before beginning.

Essential Tools

A quality wrench or socket set for the drain plug (often 14mm, 15mm, or 17mm).
An oil filter wrench (strap-type or cap-style).
A car jack and sturdy jack stands—never rely on the jack alone.
A drain pan with at least a 6-quart capacity.
Funnel for clean oil pouring.
Gloves and safety glasses to protect your hands and eyes.
Shop rags or paper towels for spills.

Required Materials

The correct amount and type of motor oil (check your owner’s manual).
A new oil filter that matches your car’s make and model.
A new drain plug washer (if recommended by the manufacturer).

Preparing Your Vehicle

Proper preparation ensures a smooth process and prevents accidents. Never skip these crucial safety steps.

Warm Up the Engine and Find a Level Surface

First, drive your car for about 10 minutes to warm the oil. Warm oil flows out more completely, carrying more contaminants with it. Park on a flat, level surface like a driveway or garage floor. Engage the parking brake firmly.

Safely Lift and Secure the Car

Consult your owner’s manual for the proper jacking points. Place the jack at the designated point and lift the front of the car. Once lifted, immediately position jack stands under the vehicle’s reinforced frame points. Lower the car onto the stands and give it a gentle shake to test stability. Keep the jack lightly engaged as an extra safety measure.

The Step-By-Step Oil Change Process

Now that your car is safely elevated and you have your tools, you can begin the core task. Follow these steps in order for the best results.

Step 1: Drain The Old Engine Oil

This is the messy part, so have your drain pan ready. Locate the oil drain plug on the bottom of the engine oil pan. It is usually a large bolt.

Position your drain pan directly under the drain plug.
Using your wrench, slowly turn the drain plug counterclockwise. Loosen it the last few turns by hand, being prepared for hot oil to flow.
Let the oil drain completely. This can take 5 to 10 minutes. While it drains, inspect the old drain plug washer for damage.

Step 2: Replace The Oil Filter

The oil filter traps harmful particles and must be replaced every time. Locate the filter, which is often on the side of the engine block.

Place the drain pan under the filter to catch any dripping oil.
Use the oil filter wrench to loosen the old filter. Turn it counterclockwise.
Once loose, unscrew it by hand. Oil will spill out, so be careful.
Before installing the new filter, dip your finger in clean new oil and lightly coat the rubber gasket on the top of the new filter. This ensures a good seal.
Screw the new filter on by hand until the gasket makes contact, then tighten it an additional three-quarter turn as per most instructions. Do not overtighten with the wrench.

Step 3: Reinstall The Drain Plug

Once oil has stopped dripping, it’s time to close the drain hole. If your vehicle uses a replaceable crush washer, put the new one on the plug.

Clean the drain plug and the surrounding area with a rag.
Thread the drain plug back in by hand to avoid cross-threading.
Tighten it with the wrench, but be cautious. Over-tightening can strip the threads on the oil pan, leading to costly repairs. A firm, snug fit is sufficient.

Step 4: Add The New Engine Oil

You can now lower the car and add fresh oil. Carefully raise the car off the jack stands, remove the stands, and lower the vehicle completely to the ground.

Locate the oil filler cap on top of the engine and remove it.
Place your funnel in the filler hole.
Pour in the recommended amount of new oil slowly. Check your owner’s manual for the correct capacity, which is usually 4 to 6 quarts.
Periodically check the dipstick to avoid overfilling. It’s better to add oil gradually than to put to much in at once.

Step 5: Check For Leaks And Reset The Monitor

Before starting the engine, do a final check. Look under the car at the drain plug and filter for any immediate drips. Now, start the engine and let it run for about 30 seconds.

This circulates the new oil. Turn the engine off, wait a minute, and check the dipstick. Add more oil if the level is below the “Full” mark. Also, check under the car again for any leaks around the plug or filter.

Finally, reset your vehicle’s oil change reminder light if it has one. The procedure is often in the owner’s manual and may involve holding down a button while turning the ignition.

Important Post-Change Procedures

The job isn’t finished until you clean up properly. Responsible disposal is a critical part of the process.

Disposing Of Used Oil And Filter

Never pour used oil down a drain, on the ground, or into the trash. It is highly toxic and contaminates the environment. Used motor oil is recyclable.

Pour the used oil from your drain pan into a clean, sealable container, like the empty new oil bottles.
Place the old oil filter in a plastic bag to prevent drips.
Take both the used oil and the old filter to a recycling center. Most auto parts stores and service stations accept them for free.

Record Your Service

Write down the date, your car’s mileage, and the type of oil and filter you used in a logbook or a note on your phone. This helps you track your maintenance schedule and is valuable information if you sell the vehicle.

Common Mistakes to Avoid

Even with good instructions, errors can happen. Being aware of these common pitfalls will help you succeed.

Using The Wrong Oil Or Filter

Always refer to your owner’s manual for the correct oil viscosity (like 5W-30) and performance specification. Using the wrong oil can affect engine performance and longevity. Similarly, an incorrect filter may not fit properly or provide adequate filtration.

Over-Tightening Or Under-Tightening

This is a frequent error. Over-tightening the drain plug can strip the oil pan threads. Under-tightening can cause a leak. The oil filter should also be hand-tight plus a slight turn—cranking it on with a wrench can make it impossible to remove next time.

Forgetting To Replace The Drain Plug Washer

A worn or damaged washer can cause a slow leak. If your manufacturer recommends a new crush washer each time, use one. It’s a cheap part that prevents a big problem.

Not Checking The Oil Level After

Always check the dipstick after adding oil and again after running the engine. An overfilled engine can cause foaming and reduced lubrication, while low oil level leads to immediate engine damage.

Frequently Asked Questions

Here are answers to some common questions about changing your car’s oil.

How Often Should I Change My Car’s Oil?

The old rule of every 3,000 miles is largely outdated. Most modern cars with synthetic oil can go 5,000 to 10,000 miles between changes. Always follow the severe or normal service intervals listed in your vehicle’s owner’s manual.

What Is The Difference Between Conventional And Synthetic Oil?

Conventional oil is refined from crude oil. Synthetic oil is chemically engineered for superior performance, offering better protection in extreme temperatures, improved engine cleanliness, and longer change intervals. Many newer cars require synthetic blends or full synthetic oil.

Can I Change My Oil Without Jacking Up The Car?

Some vehicles with high ground clearance may allow you to reach the drain plug without lifting. However, for most cars, you need to elevate it safely to access the drain plug and filter comfortably and to fit a drain pan underneath.

What Happens If I Put Too Much Oil In My Engine?

Overfilling is serious. Excess oil can be whipped into foam by the crankshaft, leading to poor lubrication, increased pressure, and potential damage to seals and gaskets. If you overfill, you must drain the excess oil out immediately to the proper level.

Is It Necessary To Change The Oil Filter Every Time?

Yes, you should replace the oil filter with every oil change. A clogged or old filter can restrict oil flow or bypass dirty oil back into the engine, defeating the purpose of the fresh oil. The filter is a relatively inexpensive but critical component.