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Old 03-15-2010, 03:04 PM   #37 (permalink)
Wonderboy
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Join Date: Jun 2008
Location: Chicago
Posts: 674

The Fruit Bat - '01 Honda Insight
Last 3: 54.26 mpg (US)

Current - '21 Subaru Impreza Wagon
90 day: 34.36 mpg (US)
Thanks: 40
Thanked 39 Times in 27 Posts
The only reward a grill block has in a city driving setting is a small thermal benefit during the winter months, but even then if you look at my fuel log, there isn't really much difference from the first winter (no grill block) and this last winter (full grill block). I didn't get on the ball this year about installing a block heater, which is another great suggestion even if it isn't wintertime.
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