I have preload mode set which states "Preload mode (garbage collection only on legacy cache files. Recommended.)". Beyond that, I have the garbage collector disabled. Yet, every time I login to check the Contents tab and regenerate the cache stats, there are 0 Cached Pages and 0 Expired pages listed under the WP-Super-Cache section.
Ideally, I would like these files to remain as a constant and only delete when I click the delete cache button (my website doesn't updated often).