 It's not going to get thick. It's not going to be cumbersome. And it's going to work very well for you. Again, they have a tendency to really fail during extremes. And clean it out. Get a rag. Use a little bit of mineral spirits, cotton cloth, and clean those rails up. And then a little squirt along the rail. Move that door back and forth. Get it on the wheels. And don't forget to do the hinges and the springs, too.