The lifeblood of your engine, motor oil needs regular replacement to maintain lubrication and cooling properties. Learning how to change the engine oil in a car is a fundamental skill that saves you money and gives you confidence in your vehicle’s maintenance. This guide provides a clear, step-by-step process to complete this task safely and correctly in your own driveway.
You will need some basic tools and about an hour of your time. The process is straightforward, but attention to detail is crucial. Let’s gather everything you need before getting started.
How To Change The Engine Oil In A Car
This section outlines the complete procedure from preparation to cleanup. Follow each step in order to ensure a smooth oil change.
Gather Your Tools And Materials
Having everything ready before you start is the key to a hassle-free job. You don’t want to be searching for a tool while oil is draining. Here is your essential checklist:
- New Engine Oil: Check your owner’s manual for the correct type (viscosity like 5W-30) and quantity.
- New Oil Filter: Ensure it matches your car’s make, model, and engine. A filter wrench is often needed to remove the old one.
- Basic Hand Tools: A combination wrench or socket set that fits your car’s drain plug (commonly 14mm, 15mm, or 17mm).
- Jack and Jack Stands or Ramps: Never rely on a jack alone. Use sturdy jack stands or drive-on ramps for safe access.
- Oil Drain Pan: A pan with at least a 6-quart capacity to catch the old oil.
- Funnel: For pouring new oil without spills.
- Gloves and Safety Glasses: Protect your hands and eyes from hot oil and dirt.
- Rags or Paper Towels: For cleaning up drips and spills.
Prepare Your Vehicle
Proper preparation ensures safety and makes the job easier. Start by running your engine for a few minutes. Warm oil flows out more quickly and completely, carrying more contaminants with it. Be careful, as the engine and oil will be hot.
Park your car on a level, solid surface like a concrete driveway. Engage the parking brake firmly. If your car has an automatic transmission, place it in “Park.” For a manual transmission, leave it in first gear or reverse.
Use your jack to lift the front of the car according to the manufacturer’s lift points, usually indicated by notches on the frame. Once lifted, immediately place jack stands under the recommended support points. Gently lower the car onto the stands. Give the car a slight shake to confirm it’s stable before crawling underneath.
Drain The Old Engine Oil
This is the messiest part, so take your time. Locate the oil drain plug on the bottom of the engine’s oil pan. It is typically a large bolt at the lowest point. Place your drain pan directly underneath it.
Put on your gloves and safety glasses. Using the correct size wrench, loosen the drain plug by turning it counterclockwise. Once loose, finish unscrewing it by hand, but be prepared for hot oil to gush out. Push the plug away quickly as you remove it to avoid the stream of oil.
Let the oil drain completely. This can take 5 to 10 minutes. While it drains, you can move on to removing the old oil filter, which is often located on the side of the engine block.
Removing The Old Oil Filter
The oil filter can be tight. Position your oil drain pan under the filter as it will contain residual oil. Use an oil filter wrench to turn it counterclockwise. If it’s very tight, you may need a strap wrench or a special socket-style filter wrench.
Once loose, unscrew it the rest of the way by hand. Tilt the open end up as you remove it to minimize oil spillage. Empty the old filter’s contents into your drain pan. Before installing the new filter, you have one important prep step.
Install The New Oil Filter And Plug
Take a small amount of fresh, new oil and use your finger to coat the rubber gasket on the top of the new oil filter. This ensures a good seal and prevents the gasket from sticking or tearing during the next change.
Screw the new filter into place by hand. Once the gasket makes contact, tighten it an additional three-quarters of a turn, or as specified on the filter’s instructions. Do not overtighten it with the wrench.
Clean the area around the drain hole on the oil pan. Check the drain plug’s washer; if it’s crushed or damaged, replace it. Wipe the plug clean, then screw it back into the pan by hand to avoid cross-threading. Finally, tighten it snugly with the wrench, but again, avoid over-torquing which can strip the threads.
Add The New Engine Oil
Carefully lower your car from the jack stands so it is sitting level on the ground. Locate the oil filler cap on top of the engine, usually marked with an oil can symbol. Remove the cap and place your funnel in the opening.
Refer to your owner’s manual for the exact oil capacity. Start by pouring in about one quart less than the full amount. This prevents overfilling, which can be as harmful as underfilling.
Replace the oil filler cap. Now, start your engine and let it run for about 30 seconds. This circulates the new oil and fills the new filter. The oil pressure light on your dashboard should go out after a few seconds.
Turn off the engine and wait a minute for the oil to settle in the pan. Now, check the oil level with the dipstick. Pull it out, wipe it clean, reinsert it fully, then pull it out again to get an accurate reading. Add more oil in small increments, checking the dipstick each time, until the level is between the “Full” and “Add” marks.
Final Checks And Cleanup
With the engine off, look under the car for any drips from the drain plug or oil filter. If you see a leak, check the tightness of the plug and filter. A small seepage from a new filter gasket might stop after the engine heats up, but significant drips need attention.
Properly dispose of the old oil and filter. Pour the used oil from the drain pan into the empty new oil containers. Many auto parts stores and service stations accept used oil and filters for recycling at no charge. Never pour used oil down a drain or on the ground.
Record the date and mileage of your oil change in a logbook or on a sticker in your windshield. This helps you maintain a consistent maintenance schedule.
Essential Tips And Common Mistakes
Knowing the basic steps is half the battle. Avoiding common pitfalls will make you a pro. Here are key insights for a successful oil change.
Choosing The Correct Oil And Filter
Using the wrong oil or a cheap filter can harm your engine. Your owner’s manual is the final authority on oil viscosity (like 0W-20) and performance standards (like API SN). Stick to it.
- Synthetic vs. Conventional: Synthetic oil generally offers better protection and longevity, especially in extreme temperatures. Many modern cars require it.
- Filter Quality: Invest in a reputable brand of oil filter. A good filter has better filtering media and a reliable anti-drainback valve to prevent dry starts.
Safety Precautions You Cannot Ignore
Rushing or cutting corners on safety leads to accidents. Always use jack stands; a jack is for lifting only, not for supporting. Wear eye protection—dripping hot oil or a slipping wrench can cause serious injury.
Allow the engine to cool slightly if it’s very hot to avoid burns, but remember that warm oil drains best. Work in a well-ventilated area, especially when the engine is running during the final check.
Troubleshooting Drain Plug And Filter Issues
Sometimes things don’t go as planned. A stripped drain plug or a stuck filter can be frustrating.
- Stripped Drain Plug: If the plug won’t tighten or keeps turning, the threads may be stripped. This may require a thread repair kit or a new oil pan. Overtightening is a common cause.
- Stuck Oil Filter: If a filter wrench won’t budge it, you can try piercing it with a large screwdriver and using it as a lever. Be prepared for a mess. To prevent this, hand-tighten the new filter properly—no wrench is needed for installation.
Frequently Asked Questions
How Often Should I Change My Car’s Oil?
The old rule of every 3,000 miles is outdated for most modern cars and oils. Always follow the interval in your owner’s manual, which is often 5,000 to 10,000 miles for synthetic oil. Severe driving conditions like frequent short trips, towing, or extreme dust may require more frequent changes.
Can I Change My Oil Without Jacking Up The Car?
On some vehicles with high ground clearance, you might be able to reach the drain plug and filter without lifting it. However, for most cars, proper access requires using ramps or jack stands to work safely and comfortably underneath.
What Is The Difference Between An Oil Change And A Lube Job?
An oil change specifically refers to replacing the engine oil and filter. A “lube job” traditionally meant greasing the chassis fittings (suspension, steering joints), which most modern cars no longer have. Today, a full service might include checking and topping off other fluids like coolant and brake fluid.
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 seal damage or oil leaks. If you overfill, you must drain the excess, either by loosening the drain plug slightly or using a fluid extractor pump.
Is It Necessary To Change The Oil Filter Every Time?
Yes, you should always replace the oil filter with every oil change. The filter traps harmful contaminants, and a used filter is clogged and can bypass dirty oil back into your engine. A new filter is inexpensive protection for your investment.