Past few months been suffering mpg,from sometimes 12.0-14.2 without even pushing it that hard based on the dashboard monitor,basically haven't had time to go to the dealer,fathers ill,tried couple of bottles of chevron fi cleaner no dice,after reading here on the forums regarding BBK-44k fuel system cleaner,i bought a bottle,not cheap filled up tank and poured it in and roughly around 30 mi of driving,based on the monitor read 16-20 avg mpg,i will keep an eye on it but seems to good to br true,especially just putting it in.
