Reviewed By Jeff S (HOT SPRINGS NATIONAL PARK, AR) Reviewed for a 2011 Ford F-150 —9/30/2014 8:17 PM
After only a few days my gas mileage has improvedby 1 1/2 to 2 mpg. I could not believe it would do that. That is according to my computer read out on my 2011 f 150 king ranch with Eco boost engine. I'm very pleased !!