I'm a notoriously happy user of FP60 and LC. But, I've also purchased VSOT and SX-Up. I have a stash of GC (4 cases), TropArtic 10-30, Havoline, Chrevron Supreme and various grades of Mobil 1 (0-40, 0-30, 5-40, etc.). Last time I counted (and before I bought the latest case of CS), I had about...