This is getting like the Tdi vs TD5 thread ! SOme of like Falcons, some like commodores. Let's ALL get over it shall we.
Perhaps not.. As I understand it, an empty ute will form a 'bubble of air' behind the cab (circulating in the tray if you like) so that oncoming air hits the screen - goes over the roff and flows across the top of the vehicle - cleanly (ish). A tray back on the other hand will have air flowing across the roof then directly down behind the cab which increases drag, apparently. Certainly tests of a ute with tailgate closed and tailgate open have demonstrated that the tailgate open had higher fuel consumption. Where did I see this ? MYTHBUSTERS.



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