Mark it once you can do it without this page open.

How to do it

  1. Park on level ground, switch the engine off and wait five to ten minutes so the oil drains back down.
  2. Open the hood and find the dipstick, usually a loop handle in yellow or orange; the manual shows where.
  3. Pull the dipstick out and wipe it clean with a paper towel or rag.
  4. Push it all the way back in, wait a second, and pull it out again.
  5. Read where the oil film ends: between the low and full marks is fine.
  6. If it is low, open the oil filler cap on top of the engine and add the grade named in the manual, a small amount at a time.
  7. Wait a minute, recheck the dipstick, stop at the full mark, and refit the filler cap firmly.
  8. Note the date and mileage so you can tell whether the car is using oil faster than it should.

Stop and call a professional if

  • The oil looks milky or foamy, which can mean coolant is getting in.
  • The level drops noticeably between checks or you see oil spots under the car.
  • Your car has no dipstick and the dashboard shows a low oil message.
  • The oil pressure light comes on at any time.

Common mistakes

  • Reading the dipstick straight out of the engine without wiping it first.
  • Checking on a slope, which tilts the reading.
  • Overfilling past the full mark, which can damage seals and the catalytic converter.
  • Pouring oil into the dipstick tube or the coolant tank by mistake.
  • Using whatever oil is on the shelf instead of the grade the manual names.

Quick self-check

Three questions. Your last score is kept in this browser.

1. Why do you wipe the dipstick and dip it again?
2. The oil is just under the low mark. What should you add?
3. What does milky, light brown oil on the dipstick suggest?

Teach this to someone

A one-page sheet for showing a friend, a roommate or a kid: what to say, what to show, and one question to check it landed.

Words on this page

Sources

  • Your vehicle's owner's manual, for your model year. Checked September 28, 2026.

Last reviewed . First published .