I looked at the ingredients list for one of the original pan doughs that Pizza Hut used to use before they went to frozen dough patties and the oil used in the dough was listed after the flour and water. That meant that there was a fair amount of oil, maybe something above 3% if I had to guess. I also looked at the ingredients list for the current frozen PH pan doughs and the oil shows up farther down the list, after the flour, water, yeast, salt and sugar. That means that they are using considerably less oil than was used in the original "fresh" pan doughs. When I researched the PH pan doughs and pizzas, I found that there were vary wide variations in the amounts of oil used in the pans themselves. But, generally speaking, there was plenty enough oil to essentially "fry" the crusts, as Matt mentioned.