okay so looking to buy a New truck here soon. currently have a 07 Chevy 2500 and cant afford 7-8 mpg any more for a gas truck. especially when im pulling an average of 3500 lbs per day. wondering what the average is on fords new 2011 diesel or just get a used diesel. i understand it will be a better truck but looking at the finances part. any input would be great! no negative though.