A couple of your comments got my attention and I have questions.I have a 2009 GT, automatic, with 32,000 miles, had it 4 years this Mar 29th, and if I cruise at 75 my mpg is about 25. I have to do 60 to 65 to get close to 30. Motor is stock, all oil changes done at dealship, 3000 miles. I have the 1...