i have the same engine/truck and have run all blends and try to run b100 as much as possible. If I had my choice i would only run b100, weather permiting, but sometimes my bio distributor isn't available or is out of fuel for a day so I have to put a couple gallons of D2 in the truck. Your truck will run perfect on biodiesel, just beaware your fuel filters my get clogged fast and if they get really clogged your injectors will starve for fuel which is very bad.