Hello, I have a 2013 250 Platinum with the 6.7 , I only put 3 to 4 thousand miles on a year, mainly pulling my fifth wheel camper. I change the oil once a year regardless of miles. I don't drive it in the winter, its stored in a heated garage, but I am wondering what I should do to keep the fuel system from causing problems from sitting for 6 months at a time. I bought the truck in January of 2015 with 9000 miles on it and haven't had any problems yet but looking for some input on what I should use for additive if any. I usually fill the tank full before storing but when I put her to bed this year it was before the stations in my area had switched to winter blend fuel. Should I store it with blended or non-blended fuel? Thanks for your input.