Your engine oil has one of the toughest jobs in your vehicle. It lubricates moving parts, helps keep the engine cool, and carries away dirt and debris that build up over time. Without enough clean oil, your engine has to work harder, which can lead to expensive repairs.
Luckily, checking your oil only takes a couple of minutes, and it's one of the easiest ways to catch a small problem before it becomes a big one. A quick look can tell you if your engine has enough oil, whether it's time for an oil change, or if something doesn't look quite right.
Even if you don't consider yourself a "car person," learning how to check your engine oil is a simple skill that can help you drive with more confidence.
Park on Level Ground and Let the Engine Cool
Start by parking on level ground. A sloped driveway or uneven parking spot can move the oil to one side of the oil pan and give you an inaccurate reading.
Turn the engine off and give the oil time to settle. Depending on the vehicle, the manufacturer may recommend checking the oil when the engine is cold or a few minutes after it has been running. Your owner’s manual is the best place to confirm the correct procedure.
Whatever the recommendation, never check the oil while the engine is running.
Before opening the hood, grab a clean rag or paper towel. Gloves and a flashlight can also help, especially if you are checking the oil outside in cold weather or after dark.
Locate the Dipstick and Check the Oil Level
Open the hood and look for the engine oil dipstick. It often has a brightly colored handle, but its location varies by vehicle. Be careful not to confuse it with a transmission dipstick.
Pull the dipstick out and wipe it completely clean. Then slide it all the way back into the tube. Remove it again and look at the marked area near the tip.
The marks may be dots, holes, lines, crosshatching, or labels such as “MIN” and “MAX.” The oil level should fall between the low and full marks.
If one side looks higher than the other, use the side with the clearest, most consistent line. Stray oil farther up the dipstick may have rubbed off inside the tube.
Still unsure? Wipe it and check again. A second or third reading is better than guessing.
Some newer vehicles do not have a physical dipstick. They use an electronic oil-level display instead, so follow the instructions in the owner’s manual or dashboard menu.
Inspect the Oil’s Color and Condition
Oil color alone does not tell the whole story. Fresh oil is usually amber, while used oil often turns brown or black as it does its job.
Look for anything unusual. Milky or creamy oil may indicate moisture or coolant contamination. Grit, foam, a strong fuel smell, or a burnt odor can also point to a problem.
If the dipstick is completely dry, the oil looks contaminated, or the red oil-pressure light is on, do not assume a routine oil change is the only answer. The vehicle may need immediate attention.
Add Oil if Needed and Recheck the Level
If the oil level is below the safe range, check the owner’s manual or oil-fill cap for the correct viscosity and specification.
Add a small amount at a time through the oil-fill opening. Wait a minute, then recheck the dipstick. Do not pour in a full quart unless you know the engine needs it.
The goal is to bring the level into the safe range, not above the full mark. Too much oil can cause problems just like too little.
If the level keeps dropping between checks, you may have a leak or the engine may be burning oil. That is worth getting inspected before a small issue turns into a much bigger one.
Need help making sense of the reading? Request an appointment with your local GreatWater 360 Auto Care shop today. We will give you a straight answer and help you figure out what your car actually needs.