It's important to know that, like cars, lawn mowers need constant maintenance in order for them to work properly through the years. One of the most shared aspects between cars and lawn mowers is the oil. Knowing how to change the oild is very important and not doing so can lead to a machine that has to work twice as hard and can break easily. So in this tutorial, you'll be finding out how to change the oild on a John Deere X320. It's easy to follow and easy to do. Enjoy!