No matter what type of garage door opener you have, you should always lube the rail where it comes in contact with the trolley carriage. Use a lubricant that doesn’t attract dirt. Silicone spray is a good choice. If you have a screw-drive opener, you’ll need to grease several spots along the rail gear at least once or twice a year. In colder climates, use lithium grease, which won’t harden when the temperature drops. Many home centers sell specifically formulated products near the openers. And don’t use too much or it could drip on your car.
When you're done watching this video you'll know how to determine whether the company you hired to replace your garage door spring installed the right size spring on your door. You'll also learn the consequences to your garage door opener if the wrong size spring is used. If you are having a problem with your garage door spring, the 2:30 minutes you spend watching this video is time will spent.