I was curious about the full grill block.
I've only experimented with grill blocks on a 2nd gen Prius. I found I could block 1/2 the lower grill all year. (Was living in Alabama at the time)
I've thought about experimenting with the Astro van. It has a huge grill opening and I don't do any towing with it. I'm thinking of putting some cardboard between the grill and radiator.
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