nothing "official". Once in a while I get a subtle wave from another bronco. In 1961, my dad bought a VW. At the time VW's were rare & they waved at each other (sometimes stopped and talked). Bikers do it. Classic muscle car drivers do it. Just a friendly jester. If you want to wave, wave; if...
think of it as paying $10/tank more for good fuel for better performance, better mpg, while better for your bronco. Three things I never go cheap on fuel, oil, brakes
I don't know about the numbers but I can feel the difference. I'm an old hot rodder - I can feel the difference with carb adjustments, timing, fuel etc
made me chuckle. 1970, I bought a '57 chevy. 1st drive I ran out of gas because the gage was off. Walked to a gas station and back. Could not find the gas cap! A drive by stranger stopped & showed me how to open the tail light to access.
To me, this is an odd question. I didn't know any car had ajustable back seats. Of course, I'm an old guy. The few vehicles I've ever had with back seats were either removed or never used.