Got an oil change last monday and put the Restore stuff in it buti took a trip to ada (120 miles round trip) on about 7-8. What i did was run my gas meter all the way to E. and i gassed up 8 gallons of gas and made it there and back and still had some to make a trip to walmart. (about 10 miles away from home). So it was somewhere near 16-18 mpg it boosted me about 2-3 mpg. So yeah im happy it worked. Just wantd to say thnx guys!!!!!!