Saw that on a pump also. From what I could tell "Premium Diesel" is regular diesel, and their Diesel number 2, had in small letters "bio Diesel", which I wont use.
Just bought a 2017 Toyota Tacoma SR5 Access cab with the 3.5 v6 with the factory towing package. It also has a leer cab high shell at about 160 lbs. Listed towing capacity is 6,500 lbs. Looking at a Rockwood trailer that has a dry weight of 4,300, dr...