How to Check Your Cars Engine Oil

Think of motor oil as the life’s blood of your car’s engine. Checking it on a regular basis is a key part of keeping your engine running well and getting the most miles out of it. The oil lubricates the engine’s internal moving parts, keeping them from wearing too quickly. It also helps keep the engine clean, by preventing dirt buildup, and helps keep it from overheating.


First, check the owner's manual and follow the automaker's recommendations. Some newer cars have electronic oil monitors and don't have traditional dipsticks for manual inspection.

If checking the oil yourself, make sure the car is parked on level ground and, with most cars, the engine is cold, so you don’t burn yourself on a hot engine part. (With some cars, the automaker recommends that the oil be checked after the engine has been warmed up.) With the engine off, open the car’s hood and find the dipstick. Pull the dipstick out from the engine and wipe any oil off from its end. Then insert the dipstick back into its tube and push it all the way back in.

Pull it back out, and this time look at both sides of the dipstick to see where the oil is on the end. Every dipstick has some way of indicating the proper oil level, whether it be two pinholes, the letters L and H (low and high), the words MIN and MAX, or simply an area of crosshatching. If the top of the oil “streak” is between the two marks or within the crosshatched area, the level is fine. But if the oil is below the minimum mark, you need to add oil.

Also, check the oil’s color. It should appear brown or black. But if it has a light, milky appearance, this could mean coolant is leaking into the engine. Look closely for any metal particles, too, as this could mean there is internal engine damage. If you see either of these conditions, get the car to a mechanic for further diagnosis. If you suspect a coolant leak, have the car towed.

If everything’s okay, wipe off the dipstick again and insert it back into its tube, making sure it’s fully seated. Close the hood and you’re done.


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Think of motor oil as the life’s blood of your car’s engine. Checking it on a regular basis is a key part of keeping your engine running well and getting the most miles out of it. The oil lubricates the engine’s internal moving parts, keeping them from wearing too quickly. It also helps keep the engine clean, by preventing dirt buildup, and helps keep it from overheating.

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