One of the best habits you can implement as a car owner is checking your oil regularly. It takes 60 seconds, requires zero tools, and tells you valuable information. For instance, low oil level may indicate an oil leak or consumption. Here's the right way to do it.
Quick answer: Check your engine oil cold, or after the engine has sat for at 5–10 minutes. The oil needs time to drain back into the pan for an accurate dipstick reading.
Checking Oil When the Engine Is Hot or Cold?
Check your oil when the engine is cold or warm but not running. When the engine is hot and just shut off, some of the oil is still circulating through galleries and clinging to internal surfaces. Wait a few minutes after shutdown so the oil drains back into the pan.
If the engine has been sitting overnight, even better. Park on a level surface for the most accurate reading.
What You'll Need (30 Seconds)
- A clean rag or paper towel
- A flat, level parking spot
- A bottle of the correct viscosity oil for top-off, in case you're low
How to Check Engine Oil
- Park on level ground and shut off the engine.
- Wait 5–10 minutes (or check first thing in the morning).
- Open the hood and locate the dipstick — usually a yellow or orange ring labeled "Engine Oil."
- Pull the dipstick out and wipe it clean with the rag.
- Re-insert the dipstick fully, then pull it back out.
- Read the level. The oil film should fall between the MIN and MAX marks (or the upper and lower hash pattern, depending on the dipstick design).
- Check the color and consistency of the rag. See the color guide below.
How to Read the Dipstick
| Reading | What it means |
|---|---|
| At MAX | Full. Don't add oil. Overfilling can foam the oil and starve the bearings. |
| Halfway between MIN and MAX | Healthy. Most engines hold a quart between marks. This means you're about half a quart down. |
| At or below MIN | Top off immediately. Add about half a quart at a time and re-check; don't dump in a full quart. |
| Above MAX | Drain the excess. Overfilled oil aerates and can damage the engine. |
What the Color of Your Oil May Indicate
Engine oil can vary slightly in color. New oil is usually golden or amber. It darkens as it’s used and exposed to high temperatures, deposits, combustion byproducts and other contaminants.
By the time oil reaches the end of its service life, it may be much darker. That said, color alone isn’t a reliable way to judge oil quality. Darkening is a natural part of the oil’s life cycle and doesn’t automatically mean it’s no longer doing its job.
That’s why it’s important to follow your vehicle’s recommended oil change intervals instead of relying only on appearance.
These are General Guidelines. Consult your owner’s manual for specific recommendations.
| Color | Status | Action |
|---|---|---|
| Amber / Honey | Healthy, new/fresh oil | Oil is doing its job. Continue normal interval. |
| Light Brown | Used but normal | Mid-life oil. Check again in 1,000 miles. |
| Black | May be approaching due for a change | Consider scheduling the next change. |
| Gritty/Sludge | Overdue | Change oil. |
| Milky/foamy | Possible coolant intrusion | Have engine checked. Possible head gasket failure. |
| Metallic flecks | Internal wear | Have the engine inspected immediately. |
How Often Should You Check Your Oil?
At least once a month, and before any road trip. If your engine has 75,000+ miles or burns even a small amount of oil between changes, check every other fill-up.
What to Do If Your Oil Is Low
If your oil is low, top it off with new oil. First, match the viscosity printed on your oil cap or in your owner's manual, usually 5W-30, 5W-20, or 0W-20 in modern vehicles. For newer engines, Valvoline Advanced Full Synthetic is a strong all-around choice.
For engines past 75,000 miles, MaxLife Full Synthetic High Mileage is formulated specifically for older engines and offers up to 50% stronger wear protection,* 2.5X better heat protection,** and 20% better sludge defense*** vs. industry standards.
Browse the complete motor oil collection or explore the full synthetic motor oil options.
Frequently Asked Questions
Can you put oil in a hot engine?
Yes, you can put oil in a hot engine. But wait a few minutes after shutdown so you can read the level accurately. Pour slowly to avoid splashing on hot exhaust components.
How long should I wait after driving to check the oil?
5-10 minutes. It’s best to check the engine when cold, and warm is acceptable. Refer to your owner’s manual for specifics.
How much oil should I add if I'm a quart low?
Add half a quart, wait two minutes, re-check. Repeat until you reach the MAX mark. Don't pour the whole quart in at once because most modern engines hold less than a quart between MIN and MAX.
What if there's no dipstick?
An increasing number of European vehicles (BMW, Mercedes, some VW/Audi) use an electronic oil-level sensor instead of a dipstick. Check via the dashboard menu, which is typically under Vehicle Status, then Oil Level.
How do I know when to take it in for an oil change?
If you've passed the OEM-recommended interval, it’s time for an oil change with a clean filter to help keep the engine healthy and running smoothly.
Checking Oil Levels and When It’s Time for an Oil Change
Taking care of the engine in your vehicle means regularly checking the oil to make sure the engine is lubricated and running smoothly. If you do a lot of city driving, the stops and starts are harder on your engine than you think. Even if you think you still have time before another oil change, your oil check may tell you differently.
Use only the best oil for your engine to prolong the life. Shop the full motor oil lineup to find the right viscosity and chemistry for your vehicle.
