I have been using Flying J for 15 years as dedicated as I can be . On my last trip 5000 miles I had to use whatever diesel stations available .they were cheaper ,faster ,They would just turn the pump ...
I know it doesn't work for those with gas motorhomes, but for those of us with diesel, I always use the truck pumps. Always fast in- fast out. Those truck pumps pump 20 gal/minute. Makes for a fast fill up! And with the discount Good Sam card, you don't have to even go into the store if you don't need a receipt.