Hello, I am interested where you fill up, at the brands filling stations like ARAL, Shell or OMV or where it is cheap(er), so like e.g. market purchase etc. So I tank only at the brands filling stations. Got a few times at market purchase and since the car has always spent more weng, badt pulled and rusted. Some say fuel is fuel, no matter where you fill up and the others have the same experience as me. My brother (truck driver) has once stuck in a driver, who from ARAL true, and he meant that only the “big” get the sprite and the “small” get the rest. (So worse fuel) What are your experiences???? mfg