Same for me. I have an 08 5.7 CM - mixed city highway I always get right around 15. The salesman said that it would get a bit more with premium, but I haven't really noticed any difference.
I would say that the estimates on the window sticker were dead on.
Quote:
Originally Posted by Wallygator
I've posted this on multiple "mpg" threads already but I get 15 mpg on every tank. I'm doing a little experiment right now on this tank. When I'm driving in the city I put the trans selector on 5 and when I get over 50 mph I bump it up to 6th. The trans doesn't shift as much and it runs smoother because of it. We'll see how this effects the mileage.
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