ive been using that tesco momentum recently and i have to say the miles i am getting from a tank has gone up around 15 miles. ive got the roc r dsg and am not unwilling to boot it. most of my driving is commuting 20ish miles a day with a bit of pottering at weekend. id always used shell/sainsburys but am impressed with this tesco stuff. i reckon im stickin with that at the min.