Hobbies Cars & Motorcycles When You Need to Add a Quart of Motor Oil Share PINTEREST Email Print Westend61 / Getty Images Cars & Motorcycles Cars How Tos Basics Reviews Classic Cars Corvettes Mustangs Tires & Wheels Motorcycles Used Cars Trucks ATVs & Off Road Public Transportation By Matthew Wright Matthew Wright Matthew Wright has been a freelance writer and editor for over 10 years and an automotive repair professional for three decades specializing in European vintage vehicles. Learn about our Editorial Process Updated on 02/20/19 If you checked your Engine oil and found the level to be low, you should add a quart. Motor oil is sold in quarts, so if you grab a plastic bottle at your local gas station, you've got a quart. There are different types of motor oil, called "weights," so check your car's owner's manual to see what they recommend. If you can't find the manual or you're in a pinch, you can always add a quart of 10W-30 or 10W-40 safely (they're labeled right on the front). If you're extra worried about cleanliness, buy a funnel, too, but it's not a must. 01 of 03 Unscrew the Oil Filler Cap Motor oil inside. Matthew Wright With your hood safely propped open, look for a big screw cap right in the middle of the engine. It'll have a picture of what looks like a watering can on it, and some even say OIL. Again, you can consult the owner's manual on this. 02 of 03 Don't Forget the Cap! Don't lose your oil cap. Matthew Wright Unscrew the cap, and put it someplace safe, where you won't forget it! Leaving the cap off can be messy and even dangerous. The engine can catch on fire. If you can, put the cap over the hole in the hood latch so that you can't close the hood without putting the cap back on. 03 of 03 Pour Motor Oil Into the Engine Motor oil poured carefully. Matthew Wright With the cap off, carefully and slowly pour your quart of motor oil into the engine. Don't worry if you spill a little, you won't do any damage but it might smoke and stink a little when you start the car. Put the cap back on the oil fill hole and you're done. You've just reduced the wear inside your engine by a lot! Remember: Only add one quart at a time.Put the cap back on! It's a good idea to check your oil again after doing some driving, just to be sure you're at the right level. That's one more step toward Automotive Empowerment. Next, check out this guide for how to change your oil.