Its amazing that you got 26 MPG with the 5.0. From day one, my 5.0 has gotten a steady 21.0 MPG. I do a mix of highway and city driving. If nothing else has changed on your car start checking the basics like tires, plugs, fluid qualities and extra weight. Good luck!
1964.5 convertible and a 2012 Sterling Grey GT. 100 hp. and 412 hp. Go Bama, Roll Tide! 2015 National Champions! Clemson put up one heck of a fight!