This was performed by surveying 18,000 consumers across the country, none of which are collecting subsidies.

http://www.redorbit.com/news/science..._by/index.html

I believe the bp/amoco fuels were rated the top fuel for over 15 years in a row. I'm not knocking the Jag and Land Rover researchers' choice of fuel, I'm merely saying the guy should try a tank of BP. It has worked well for me

 

I've put every concievable brand of gasoline ever made in my truck. Nothing changes my fuel mileage except when I run ethanol. Only then do I see a slight mileage drop.