Thunderslide

Reading and searching.. E-85 is supposed to really burn clean. So clean, "it removes carbon from tail pipe". Now having an 06 and the related spark plug issue, Would it be a good idea to run e-85 until the exhaust pipe is clean before attempting the spark plug change.... Now mind you I have not used e-85 in the truck, I bought the truck used so I can't verify if it had ever been used. It was a leased truck so I just do not know. Any thoughts?