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I thought the same about Ford's thing, the active grill could be good in cold weather too, not just high speeds
" title="Ford Focus Active Grill Shutters - YouTube" target="_blank">Ford Focus Active Grill Shutters - YouTube
But will the electric motors that move it get icy...
Originally Posted by Blogson
When I lived in Minnesota some folks would place a sheet of cardboard or similar material in front of their gasoline car radiatiors in winter, usually with part of it cut away to allow for partial airflow. I suspected that they may have had problems such as defective thermostats, but don't know for certain.
When it's cold enough, even gasoline engines' heat may not keep all engine bay in optimal temperature. (Even not to mention diesels, my diesel Rav4 heats into normal temperature after about 10km(6.2miles) drive if it's more than -10C(14F) and no preheat used.)
But the best effect comes when you start driving, engine heats up more quickly as the draft don't cool it down at all.
Cardboard sheets do the job too, but aren't stylish unless you hide it well. They have been popular here too.
One company here makes more nice looking ones:
Leo Laine Oy // lokari.fi