So..... Maybe this is an obvious and/or stupid question but, what is different about the asphalt at the gas station than a runway? We had a diesel truck for many years and the area around the diesel pumps were always slippery from diesel spills but the asphalt was never soft or deteriorating. Since I saw this thread I've been looking at the diesel areas when I go to the gas stations. That said, would it stand to reason that perhaps it's the turbine oil causing the problem more than the fuel itself? Maybe the oil in the diesel is more caustic than in jet A but is the diesel really the issue? Just seems odd that the parking lots around the diesel pumps aren't all crumbling if what you say is true.