Any one have a 08 Ford with the new 6.4L diesel? Hows the fuel mileage and hows the power? My 06 F250 has a 5.4L gasser, it does ok but in 3 years IMO that engine even with regular maint. is going to be tired. I wanted a diesel from the beginning but when I bought this one, there was no XLT's in white with a diesel anywhere around so I was stuck buying a gasser. Dont get me wrong, this truck is a great truck but we're pulling around 6-7k pounds almost every day or pushing snow. I plan on keeping this truck for quite awhile....any thoughts?