I have been using P&G whenever I can (roads permitting - not all are 30 or 35 mph roads, and there are lights and stop signs and all manner of other real world mileage-killing things), and this tank at 190 miles is at almost 60mpg, up from 56 mpg after getting back from the event (at about 140 miles). It does work.

I'll post the info from earlier on the other thread.