I agree most of my gains are from changing the way I drive. I'm positive the grille block has improved my mileage at least a small amount, if only due to the fact that my truck gets up to temperature much quicker. I also can't say I did anything different with my driving this week than last, and on top of that I did more driving through town in congested traffic than normal. I did fill up at a different tank than usual and that could have shifted my numbers, which will be evident in the next couple tanks if true.
I spent all week hearing about how I'm going to blow my truck up because my motor can't breathe. Monday I found flowers stuck in the grill. I've been asked about the air dam. No one can figure out why it's there because they KNOW there is no way it could improve my fuel efficiency. Apparently ford made the perfect truck in 1994 and I shouldn't be adjusting anything on it. I walked outside today and the same guy that told me how redneck and stupid it was has a pair of hemostats for a radio antenna... go figure. While he sits around this weekend using his antenna, I'll keep working on saving some money at the pump.
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