I WAS TOLD BY A MECHANIC FRIEND THAT THIS PRODUCT WAS THE BEST HE AS EVER SEEN. HE SAID BEFORE DOING A TUNE UP,THEY USE THIS PRODUCT TO CLEAN THE ENTIRE FUEL/INJECTOR SYSTEM. ITS NOT CHEAP{$18.99}AND IT ONLY NEDDS TO BE USED ONCE A YEAR. HAS ANYONE HEARD OF THIS PRODUCT AND IS IT WORTH THE MONEY?
