I have noticed that the 2014 and 2015 X500s have a line of vents on each side along part of the top of the hood. I would think that, along with the improved grille, would help air flow in the engine compartment a lot, thereby prolonging engine life by allowing it to run cooler. Does anyone care to venture a guess as to how well that vented hood and improved grille would increase air volume and air flow under the hood? Thanks in advance.