How to Change Your Oil
Reviewed by GarageDex editorial
A DIY oil change takes about 30 minutes and saves money over the shop. The two things that make it foolproof: use the exact oil viscosity your engine needs (like 0W-20 or 5W-30) and add the exact capacity - not too much. Here is the full process, plus how to find your numbers.
Step by step
- Look up the correct oil viscosity and capacity for your exact engine, and buy that oil plus a new filter.
- Warm the engine briefly, park level, and safely raise the car if needed.
- Place a drain pan under the plug, remove the drain plug, and let the old oil fully drain.
- Remove the old oil filter, lightly oil the new filter's gasket, and install it hand-tight.
- Reinstall the drain plug, add the correct amount of new oil, then check the dipstick.
- Run the engine, check for leaks, and recheck the level after it settles.
Get the grade and amount right
This is what makes or breaks the job. Your engine needs a specific viscosity and a specific capacity. Look up the exact oil type and capacity for your car. New to viscosity grades? Synthetic vs conventional explains the basics.
Don't overfill
Add a little less than the full capacity, run the engine, let it settle, then top up to the upper dipstick mark. Too much oil can foam and damage seals.
Frequently asked
How much oil does my car need?
It depends on the engine - typically 4 to 6 quarts, but check your exact figure. Overfilling is as harmful as underfilling, so add most of it, then top up to the dipstick mark.
Do I need to change the oil filter every time?
Yes. Always replace the oil filter with the oil. A clogged old filter can bypass and circulate unfiltered oil, defeating the whole change.
What oil should I use?
Use the viscosity grade in your owner's manual (most modern engines: a low-viscosity full synthetic like 0W-20). The wrong grade hurts fuel economy and protection. Look up your exact spec before buying.
Need your car's exact spec? Find your oil type & capacity →