There are two grills, one is devoted to eggs and the other grill does everything else. Sausage and beef regularly go down on the same grill one after the other. And according to a McDonald's employee, because of the increase of menu items, there usually isn't time to clean the grill.
All-day breakfast could be the cause of the rising menu prices. Hash browns can be over two dollars!
Since breakfast isn't in high demand after a certain time, it's made-to-order, so you could be waiting a long time for your "fast food".
And if you're not waiting, it's definitely not fresh.
There's not a dedicated switch over, so utensils are often used to cook beef, sausage and eggs.