You have to run 91 or better with the supercharger. Maybe they just need to be sure it's in the truck when the supercharger is installed. Maybe it saves them time when installing if they know that premium is already in the tank.

So TundraFL, I'm guessing you are taking the scenic route home for a couple of days to burn off any extra gas.

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2007 SR5 Crewmax 5.7L 4x4
Mods: nerf bars, Truxedo tonneau, radar detector power, fog lights, black billet grille, rear differential breather, parking sensors, Line-X, power tailgate lock, hood safety latch mod, one off driving lights behind grille, Pioneer NAV w/ OEM camera, Flowmaster 50 SUV dual/dual, blue LED dash lights, Volant CAI
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