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Old 04-18-2012, 09:12 PM   #6 (permalink)
sid
EcoModding Apprentice
 
Join Date: Apr 2010
Location: Florida
Posts: 202

grayranger - '10 Ford Ranger XL 2 door supercab
90 day: 31.78 mpg (US)
Thanks: 27
Thanked 48 Times in 28 Posts
I noticed the same thing. My Ranger runs about 6 degrees F cooler with the upper grill blocked, which I did about 9 months ago. Seems to have picked up about 1 to 1.5 mpg with upper grill blocked.
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2010 Ford Ranger, extra cab, 2.3 liter
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