I have a 06. Make sure they have done all the recall stuff. I have had 3 or 4, cant remember. But I got one of the early 06's, so you may be fine. And I have had to bring it in twice to get the computer reflashed/updated or whatever they do.
I dont use a additive yet, but I am going to start just to be on the safe side. Nice truck man you will love it.
Here is mine.
