How To Check Engine Oil
Checking the oil level takes a few minutes and is one of the best ways to protect your engine. Here is how to read the dipstick or the electronic oil level display correctly.
What you need
- Clean cloth or paper towelTo wipe the dipstick.
- Owner’s manualShows where the dipstick is and how your car checks oil.
- Gloves (optional)Keeps your hands clean.
Step by step
- Park on level groundA slope gives a false reading. Switch off the engine and apply the parking brake.
- Wait a few minutesLet the oil drain back to the sump. Most manuals say about five minutes after a warm engine is switched off; some recommend checking cold.Parts of the engine stay hot. Keep away from the exhaust manifold and fan.
- Pull out the dipstick and wipe itThe handle is usually yellow or orange. Wipe the end clean.
- Reinsert it fully and pull it out againHold it level and read where the oil film ends.
- Read the levelIt should be between the minimum and maximum marks. Do not top up above the maximum.
- Look at the oilFresh oil is amber; old oil is dark. Milky or foamy oil can mean coolant in the oil and needs a workshop.
- Cars without a dipstickUse the oil level menu in the instrument cluster as described in the manual. Some cars need several minutes of driving first.
When to go to a workshop
Go to a workshop if the oil looks milky, smells of fuel or contains metal particles, or if you need to top up more than the amount your manual considers normal between services.
If the red oil pressure light comes on, stop the engine. That is not a level check any more: driving on can destroy the engine within minutes.
Questions about How To Check Engine Oil
How often should I check the oil?
Many manufacturers suggest checking regularly, for example at every other refuelling and before long trips. Your manual gives the recommendation for your car.
Is it bad to have too much oil?
Yes. Overfilling can make the oil foam and damage seals or the catalytic converter. If the level is clearly above the maximum, have the excess drained.