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30 October 2025 (updated) How to Change Engine Oil: Step-by-Step Guide to Car Oil Changes
Changing your car’s engine oil is a crucial part of vehicle maintenance that anyone can learn to do at home. This simple guide walks you through everything you need – from getting the right garage tools to completing the job safely – thus saving you time and money, as well as keeping your engine running smoothly.
How to change engine oil
Before you can add new engine oil, you’ll need to drain the old fluid before replacing the filter and refilling the reservoir with fresh oil. Before you start, you should check the car owner’s manual for the exact type of oil specified by the manufacturer. Do not use products with different specifications.
Oil change steps:
- Park on a flat surface, and once the engine cools, raise the car with a car jack and jack stands or a lift.
- Place an oil pan under the drain plug below the vehicle, then remove the plug to let old oil drain.
- Once finished, replace the drain plug.
- Next, remove the old filter and install the new car oil filter, lightly coating its seal with fresh oil. You may need to use a oil filter removal tool.
- Remove the filler cap and gradually pour in the new oil, checking the level with the dipstick as you go along. Do not exceed the maximum amount.
- Dispose of the old fluid in accordance with local regulations.
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Engine oil and filter change
Before replacing the engine lubricant, the old oil must be drained out of the engine. It is also recommended to replace the filter during every oil change to ensure that the new lubricant can flow without blockages and avoid oil starvation. This also ensures that the fluid stays fresher for longer.
In addition, it is also a relatively easy replacement and, this way, you’ll end up saving yourself time and money. Make sure to follow the recommended replacement intervals in the manual and regularly check the motor oil levels.
Where to put the engine oil
To add oil, locate the reservoir filler cap, usually found on top of the engine and labelled with an oil can symbol or the words "Engine Oil”. You can also check the diagrams in the car manual to be sure of its location.
It’s important to top up the lubricant gradually, checking the level with the dipstick periodically to avoid overfilling. Both too little and too much oil can have a damaging impact.
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How often should engine oil be changed?
Most manufacturers typically recommend intervals of anywhere between 5,000 and 7,500 miles though this may vary depending on the vehicle’s year of manufacture, make, model, and operating conditions. Many modern vehicles using synthetic oil can go longer between changes, often up to 10,000 miles. However, frequent short trips, extreme temperatures, heavy loads, or off-road driving can lead to more frequent changes.
Whatever the case, make sure you don’t wait longer than is recommended in the owner’s manual. Some vehicles also feature dashboard alerts to remind you when the next oil change is due.
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Why should your engine oil be changed at the recommended intervals?
Changing the oil according to the recommended intervals helps prevent internal sludge buildup, engine wear, overheating, and corrosion, ensuring the motor runs optimally. If you leave the lubricant to deteriorate for too long, it may lose its properties and contaminants can block the filter and oil supply system. Without a protective layer of clean oil, the engine will eventually fail completely.
How to know if a car oil change is required
Apart from the mileage, there are other signs that a car oil change is needed, such as an illuminated oil warning light or changes in colour and smell. You can inspect the oil using the car dipstick (if present). If it looks dark or sludgy or smells burnt, it’s time for a change. Moreover, if you hear unusual engine noises or notice rough performance, dirty oil or a leak could be the cause.
How much oil does my car need for an oil change?
The amount of oil needed for an oil change varies by car engine, typically ranging from 4 to 8 quarts. Small cars generally require about 4–5 quarts, while larger vehicles like SUVs or trucks may need around 6–8 quarts. For the exact engine capacity, check the manual for your specific vehicle make and model.
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Can I change the engine oil myself?
Yes, you can easily change your engine oil yourself at home. However, it is important to ensure you use the correct oil, as well as proper equipment to lift the vehicle safely. Always let the engine cool before starting and wear work gloves to avoid skin contact. Dispose of the old oil responsibly at a local oil bank or licensed recycling facility.
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