I guess some of them were years old - I'd never considered cleaning that area. So I vacuumed them with a 1/2" ID hose stuck on the the vac's nozzle - I did have to use a thin screwdriver to dig some out. This exposed quite a bit of the finned area.
Did it have an effect? Hard to tell from the temp gauge, but it had to have helped cooling a bit.
I would suggest all pop their grille and clean the area - maybe in the "pine belt" there will be large amounts of needles lodged there.
* The foam worked great, incidentally, although I did blast it with a hose afterwards.
Tom M.
Radiator Right Side

Radiator Left Side
