Check your oil with the dipstick while the engine is cold and parked on level ground
The fastest way to check your oil is to pull the dipstick — a long metal rod with a handle, usually bright yellow or orange — wait a few minutes after turning off the engine so the oil settles, wipe it clean on a paper towel, reinsert it all the way, then pull it out again and read where the oil line sits. If the level is between the minimum and maximum marks, your oil is fine. If it is below the minimum mark, you need to add oil.
The whole process takes about five minutes and requires no tools. You do not need to be under the car or remove anything except the dipstick itself. Checking monthly, or before a long drive, catches low oil before it causes engine damage.
Key Takeaways
- Park on level ground and wait at least two minutes after shutting off the engine so the oil drains back into the pan and gives you an accurate reading.
- The dipstick has two marks — minimum and maximum — and your oil should sit between them; below minimum means you need to add oil.
- Wipe the dipstick on a clean paper towel or rag before reinserting it, because oil clinging to it will give you a false high reading.
- If you cannot find the dipstick or your car has an electronic oil monitor instead, check your owner's manual for the location or how to read the dashboard display.
Locate the dipstick under the hood
Open your hood and look for a handle sticking up from the engine block. On most cars, the dipstick is on the driver's side or center of the engine, and the handle is either bright yellow, orange, or red so it stands out against the metal. If you cannot spot it when ready, check your owner's manual — it will show you exactly where it is on your model.
Some newer cars do not have a traditional dipstick at all. Instead, they use an electronic oil level sensor that displays the reading on your dashboard. If your car has one of these, you will not see a dipstick under the hood. Check your manual to learn how to read the oil level on your display.
Wait for the engine to cool before you check
Turn off your engine and wait at least two to three minutes. This matters because hot oil is thinner and sits higher on the dipstick than it actually does when the engine cools down. If you check while the engine is still warm, you will get a false reading that makes your oil level look higher than it really is.
Park on flat, level ground before you check. If your car is tilted, the oil will pool to one side of the pan and give you an inaccurate reading. A driveway or parking lot is fine; avoid checking on a slope.
Pull out the dipstick and wipe it clean
Grasp the handle firmly and pull the dipstick straight out. Oil will be clinging to it — that is normal. Take a clean paper towel, rag, or old cloth and wipe the dipstick from top to bottom until it is completely dry and no oil residue remains.
This step is crucial. If you skip it and reinsert the dipstick without wiping, the old oil on the stick will make the new reading too high, and you will think your oil level is fine when it might actually be low.
Reinsert the dipstick all the way and read the level
Push the clean dipstick back into its tube until it sits all the way down — you will feel it stop. Wait a second or two, then pull it out again. This time, look at where the oil line reaches on the stick. You will see two marks: a minimum line (often labeled "MIN" or "L") and a maximum line (often labeled "MAX" or "F" for full).
Your oil level should be somewhere between these two marks. If the oil reaches the maximum line, your oil is full. If it is between the two marks, you are fine. If it is below the minimum line or there is barely any oil on the stick, you need to add oil to your engine.
What to do if your oil is low
If the dipstick shows oil below the minimum mark, you will need to add oil. Locate the oil filler cap on top of the engine — it usually has an oil can symbol on it — and unscrew it. Pour the recommended oil type slowly into the opening, then wait a minute for it to drain down into the pan.
Check the dipstick again using the same process: pull it out, wipe it, reinsert it, pull it out, and read the level. Add a little more oil if needed and check again. It is easier to add oil gradually than to overfill and have to drain some out. Once the level is between the minimum and maximum marks, screw the cap back on and close your hood.
If your oil is low frequently — more than once a month — your car may have a leak or be burning oil, which means you should have a mechanic inspect it.
How often to check your oil
Check your oil at least once a month, or before any long road trip. Older cars and cars with higher mileage may need checking more often. Some people check every time they fill up with gas, which is a safe habit if you want to catch problems early.
Your owner's manual will tell you the recommended oil change interval for your specific car — usually every 3,000 to 10,000 miles depending on the vehicle and oil type. Checking the level between oil changes helps you catch leaks or excessive oil burn before they become expensive problems.
Frequently Asked Questions
What if I cannot find the dipstick?
Some newer cars have electronic oil sensors instead of dipsticks, and the reading shows on your dashboard. Check your owner's manual for your car's year and model — it will tell you whether your car has a traditional dipstick and where to find it, or how to read the electronic display.
Can I check the oil while the engine is running?
No. Always turn off the engine and wait a few minutes. Hot oil is thinner and will give you a false high reading. You also risk burning yourself on hot oil or engine parts.
What type of oil should I add if the level is low?
Use the oil type listed in your owner's manual — usually something like 5W-30 or 10W-40. The manual will specify the exact grade. Using the wrong type can affect engine performance and fuel economy.
Is it normal for oil level to drop between oil changes?
A small drop is normal as the engine burns some oil during operation. If the level drops more than a quart between oil changes, or if you are adding oil every few weeks, have a mechanic check for leaks or internal engine problems.
What do the minimum and maximum marks mean?
The minimum mark is the lowest safe level — if oil is below this, you risk engine damage from inadequate lubrication. The maximum mark is the full level. Your oil should stay between these two marks. Overfilling past the maximum can damage the engine, so do not exceed it.