Should I check engine oil when the engine is hot or cold?

Follow your vehicle owner's manual. Some vehicles specify checking when cold, while others require a warm engine followed by a particular waiting period. There is no single correct waiting time for every vehicle.

What should I do if the oil level is below MIN?

If the owner's manual permits topping up, add only the specified oil in small amounts and recheck after each addition. Never exceed MAX. If no oil is visible on the dipstick, investigate before driving.

What if the engine oil level is above MAX?

Do not drive until you have checked the owner's manual or obtained appropriate help. Too much engine oil can cause problems, so do not try to correct an overfilled engine by guessing.

Why is the dipstick reading unclear or different each time?

Oil can smear along the dipstick or tube. Wipe the dipstick clean, insert it fully, remove it smoothly and read both sides as your owner's manual describes. Make sure the vehicle is on level ground.

Does a normal oil level mean it is safe to ignore an oil-pressure warning?

No. Oil level and oil pressure are different. If the oil-pressure warning appears while the engine is running, stop safely, switch the engine off and seek appropriate assistance even if the dipstick level looks normal.

Guides/Automotive/How to Check Engine Oil Level

How to Check Engine Oil Level

Check a conventional car engine's oil level safely with the dipstick on level ground, then decide whether topping up or professional inspection is needed. For another routine check, see how to check and adjust car tyre pressure.

Updated Oct 15, 2026

10 min6 stepsBeginnernew

What you need

Tick off what you already have.

Tools

Clean lint-free cloth or paper towel
Disposable gloves, optional
Funnel, only if topping up

Materials

Correct engine oil, only if topping up

Car owner's manual open to the instructions for checking engine oil

AI illustration

Step 01 / 06

Read the manual and check for warnings

Use these steps only for a vehicle with a manual engine-oil dipstick; electronic gauges have their own procedure. Check the specified oil and measuring conditions. If an oil-pressure warning appears while the engine is running, stop safely, switch off and seek assistance. A normal oil level does not prove that oil pressure is safe.

Guide progress1 / 6

1. Read the manual and check for warnings
Instructional illustration generated with AI for Howmigo.
Use these steps only for a vehicle with a manual engine-oil dipstick; electronic gauges have their own procedure. Check the specified oil and measuring conditions. If an oil-pressure warning appears while the engine is running, stop safely, switch off and seek assistance. A normal oil level does not prove that oil pressure is safe.
2. Park safely and wait as specified
Instructional illustration generated with AI for Howmigo.
Park on level ground, apply the parking brake and secure the transmission as the manual directs. Switch the vehicle fully off, including a hybrid's READY mode. Follow the specified temperature and waiting time: some cars require a cold check, others a warm engine left to rest. Do not use a universal waiting time.
3. Locate the engine-oil dipstick
Instructional illustration generated with AI for Howmigo.
Open and secure the bonnet as instructed. Identify the engine-oil dipstick using the manual rather than handle colour alone, and pull it out carefully. Keep clear of hot parts, belts, electrical connections and cooling fans, which can start even with the engine off.
4. Wipe and reinsert fully
Instructional illustration generated with AI for Howmigo.
Wipe the dipstick with a clean lint-free cloth. Insert it fully into its own tube, then withdraw smoothly as the manual directs. Keep dirt out of the tube and avoid touching nearby components.
5. Read the oil level
Instructional illustration generated with AI for Howmigo.
Hold the dipstick as the manual directs and inspect both sides against MIN and MAX. If smears make the reading unclear, wipe and repeat rather than guess. Do not add oil if the level is within the permitted range. Below MIN, no visible oil, milky oil, metal particles or a sudden drop needs attention before driving.
6. Refit or top up carefully
Instructional illustration generated with AI for Howmigo.
If low and the manual permits it, add only the approved oil through the engine-oil filler in small amounts, using a clean funnel. Wait and recheck each time; never exceed MAX. Do not guess the quantity between marks. Wipe spills, refit the filler cap and dipstick, and secure the bonnet. If above MAX or unsure, obtain help before driving.