The previous advice is excellent, but I will add my 2 cents FWIW.
I use Powerservice very liberally and have had minimal trouble. Buy your fuel from a respected place and always put in twice the powerservice recommended on the bottle no matter what the blend. You will not hurt the truck and if their is a high % of #1 in the fuel anyway, you still need the lubricity provided by the PS. Also, I always keep 2-3 fuel filters in my truck, the equipment needed to change them, and a quart of Powerservice 911 (red bottle). The two times I've gelled mine in 250k (both times with a 50:50 blend and powerservice) it's taken between 2-3 fuel filters and a quart of 911 to make it function. I dump most of the quart in the tank and dump some in the bottom of each filter.
Fuel quality here in SW MN sucks. It's terribly variable and if their is more soy in it than there should be, it will gell, bad. Filters will have a quarter inch of honey like crap on every pleat, just a serious PIA. All of the fuel additives have a hard time working well with the soy product.
Hopefully you won't have any trouble, but it never hurts to be prepared. I have also helped out many other people along the roadside by being prepared.
Good luck
Matt