I retired the civic recently and in its place i have a 1.4D4D yaris. Oh boy......
Anyway, we had a bit of a freeze recently too so i blocked up the rest of my grille so i had no opening at all. This resulted in the car warming up quicker and allowing me to be toasty inside without mpg suffering. Now, it didn't start melting the dash vents or anything!! Just a little cooler than the civic used to be at the same setting. I guess it uses so little fuel that it's difficult to warm up. Being a diesel doesn't help either. I havent wired up the fan light so when it's not freezing i open up the radiator to a 4" x 4" opening, just in case.
ollie
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