Blue Coral Dri Clean has worked good for me, but the Prestone would probably do just as well or better. The brush I use is a fairly soft fiber brush I bought at Wal-Mart. You don't really want to do a lot of scrubbing on the cloth, anyway. I would think most any of the name brand
fabric cleaners will work for you. Just follow the instructions.
Like Jngr, I prefer the foaming types, and treating the fabric with some kind of fabric protectant after it is cleaned is definitely worth the effort. 303 Hi-Tech Fabric Guard is what I used to treat the seats after shampooing them.
Charles