Fuel is all pretty equal coming out of the refinery. The additive packages are the differentiator, with Top Tier making the most difference. I am a certified lube technician, and can assure you there is a long term difference in use of Top Tier fuel. In addition, watch out for cheating on octane rating. If your car knocks, stay away from that brand. I will never use QT again. The car knocks, even with computer adjusting the engine, so it must really be below the posted octane....
2015 Ingot Silver Ford Mustang GT Coupe, Ford Racing/Borla Touring Cat Backs