[Moppie]

All fuel is differnt, and not just between brands, two mobil stations 2 miles apart might have quit differnt quality fuels in thier tanks.

There are so many variables that effect fuel quality that no matter where you go you are taking a chance that you might get bad fuel.

Something as simple as whether or not the tanker that delivered the fuel was properly sealed can effect octane rating by a few points.


Try useing a differnt station, and see if you notice a change, but usualy a misfire is the result of poor fuel or spark supply, rather than poor quality fuel.