I was curious if anyone has seen any gains by swapping out synthetic in their AT. Power, feel, or MPG.

 

I have Pennzoil Platinum synthetic in my 2008 4.7 Ram QC, and I didn't really notice that much of a difference. But I can reset the overhead console when I hit the freeway and it will quickly climb from it's normal 16-17 mpg to 20 or so. It will stay at 20 or so for as long as I am on the freeway if I set the cruise between 60-70.

On another note, just for grins I reset it at a stop light and got on it for a couple of miles just to see how far the other way it would go. I got it down to 5 mpg or so before I quit!