Originally Posted by internalaudit
Can you share some photos and specific materials you used?
Since my RAV4 is black, I cut a strip of plastic from a heavy duty black trash bag. About 2" x 32". Then I used some black electrical tape to tape it into place. I did this just to see what happens, not expecting to see such large gains.
But now I think I'll keep it as is for the season. The tape seems to be holding up and it looks ok since everything is black. I can take a picture if you are still interested.
I'll try blocking half of the lower grille next.