That's not a good reference for the tt raptor. The raptor makes 17% more power than the 150, where do you think they are getting that power from? Certainly more boost and timing, so then the raptor is going to benefit more from premium fuel than the standard f150.
Also premium does not cost 20% more, it's about 10%
So for instance, in my 6.2 (yes unlike most of the bench players chiming in i try to back it up) i see an 8% gain in fuel economy with premium vs regular (for a net 2% loss) HOWEVER with the 6.2 the power on premium is 411 vs 400 on reg so really there's my 2% that "I'm paying for" not to mention, premium fuels are just that. Premium. Meaning less carbon buildup among other things.
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