I have a 2011 Gammill Vision and took the 2 day class back then that came with it. Basically, what I learned is that you really can't over oil the machine. I oil mine at the start of each day that I am using it. If I don't use it for awhile, I oil at least once a week. I keep a piece of batting under the machine to catch any oil drippings. My machine does great! Never any tension issues and it just purrs along.