Car: 2002 Subaru WRX Wagon. Total Miles: 127,XXX Miles on Oil: 3,200 Oil: 0w30 German Castrol Syntec Makeup Oil: 0 quarts Filter: OEM Blue Subaru Filter I bought my WRX last year with 108,000 Miles on the clock. Previous owner religiously changed the oil every 3-4000 miles at the dealer, with whatever Valvoline the dealer had been using. I got the car and did the 12oz Auto-RX treatment on the car, and then after the directions indicated so, I switched to GC with the 3oz Auto-RX maintenance dose. I drive pretty much 75% highway, 25% city. I drive the car fairly hard at times, but a lot of the time I just get on the highway and set the cruise. This UOA had 1200 miles worth of trips on it (3- 8 hour round trips) at 75-85mph. Car does have a Amsoil EAA drop in panel filter. I had the anaylsis done at Blackstone. The low fuel could have been from the short trip I took before changing the oil.