Tanke mostly Super Plus, but I have been on the road with Super several times in last time. Today I gave him again 100 octan from Aral and the thing went off like the fire department. I have usually noticed the difference only at high speeds or speeds, because I always had a little feeling, as if the speed limiter used with Super in the tank, but today the difference was already clearly noticeable even at low speeds. , what do you fuel and feel a clear difference ? Markus