Re: Overland Hemi Economy Button
I'd wait until you've broken in the hemi before trying to check fuel differences.
Running it up thru the gears in sport mode after the first few hundred miles is supposed to help with break in.
Doesn't appear to have affected oil consumption, I've got about 17K on a hemi and it doesn't burn even as much as a quart in 5K miles even with some enthusiastic mountain freeway climbing on weekends. I almost wonder if I am not burning ENOUGH oil... like the old Jaguar 6 where low oil consumption was not good news.