FYI, this grille block was in place for the entire summer (I don't use the AC). Rad fan did not run in city or flat land (mostly) cruising @ 80 km/h (50 mph).
from: http://ecomodder.com/forum/showthrea...-km-18930.html
I now have it fully blocked for winter. (Might be a bit much: I've heard the fan come on a couple of times cresting hills.)