Best tape to use to block off grill during winter to increase my hybrid's MPG?
I'm considering blocking off the lower grill to improve the MPG by 1-3.
http://www.rav4world.com/forums/109-4-4 ... iator.html
1) Anyone know what kind of tape adhesive won't ruin the 3M film so I can use it as a "primer" before taping with duct tape? I think in Sweden, they used duct tape and cardboard but I may just use duct tape to play it safe.
2) Will it really improve MPG? It's a hybrid vehicle so the less frequent the gasoline engine has to start up, the better the MPG.