It’s true that cars built more than 10 years ago are not as efficient as cars built today. But many people have their motor oil changed at the same frequency, no matter if their car was built in 2003 or 2013. You may be surprised to learn that you may not need to change your motor oil as frequently as you think. The simplest way to find out is to visit checkyournumber.org and enter the year (available for cars built after 2000), make and model of your car. It will tell you the exact manufacturer-recommended oil change for your car, not the average for all cars. And here’s a bonus tip: If you change your motor oil at home and have a spill, grab dryer lint to clean it up. The lint will soak up the spill and you can properly dispose of it with ease.