If your garage door opener is loud or acting up, lubricating the screw drive may solve the problem. The Genie GLU-R screw drive lube can reduce garage door opener noise, help with smooth operation and prolong the long life of the screw drive rail. It is designed specifically for Genie screw drive opener rails and is the only recommended lubricant for Genie garage door openers. This screw drive lubricant is made of lithium grease, which applies quickly and easily. One tube lubricates the entire screw drive, and it is sold in a 3-pack, so you will have plenty left for all your future needs. Screw drive lube application is recommended annually in 1 inch thick dabs of lube at 3 points along the rail for best results. When the screw drive is operated, the lube will disperse along the rail. If used regularly, the lube will enhance the performance of your garage opener.