Well, it's about -26 C here so I used black duct tape across my Saab's grille as a winter front. I guess I've got my first aerodynamic grille block too. :-)
Well, it's about -26 C here so I used black duct tape across my Saab's grille as a winter front. I guess I've got my first aerodynamic grille block too. :-)
Looks fine and only took 5 minutes.
The cold temps are going to make it very problematic to see any mpg benefit from the grille-block.You may have to wait 'til spring before results emerge from the background noise of winter driving.
I have been running almost a full year with tape as a grill block -- I use Gorilla tape, though I started with transparent duct tape, and I tried Weatherseal tape, as well.
Aerodynamics are even more important in the winter: I noticed that with frozen slush stuck to my car, my mileage stayed below 39mpg, and after cleaning it off, I got the average up to 41mpg again.