Here in texas there is only 1 kind of diesel fuel sold at truck stops. Diesel #2. Some regular gas stations have labels on the pump stating if/how much bio is their diesel. Use at your own risk. If they have anything else its labeled as kerosene(red dye)
Some stations are obviously better than others. In my diesel, I only use a reputable place to fill up. I learned my lesson filling up at a raceway one time. didnt make it a couple miles before my dash started yelling at me and the truck went into limp mode