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Old 09-22-2008, 05:37 PM   #1 (permalink)
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Aero deflector

I bought the truck with this air deflector already on it and i was wondering if this helped the aerodynamics or if it will decrease my gas mileage?

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Old 09-22-2008, 05:59 PM   #2 (permalink)
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It doesn't look like it's really an aero deflector as much as a rock deflector. I don't think it's going to help your mpg. Can you take it off and test a couple of tanks with it on and with it off?
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Old 09-22-2008, 07:05 PM   #3 (permalink)
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It does not help for sure. On the other hand, I've never seen anyone quantify how much it hurts.
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Old 09-22-2008, 08:39 PM   #4 (permalink)
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I think the point of those is to be a bug deflector to keep your windshield clean.
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Old 09-22-2008, 09:21 PM   #5 (permalink)
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Looks too small to be a big deflector. I 2nd saunders1313 suggest of running it off on a couple of tanks and see if there is a difference.
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Old 09-23-2008, 10:18 AM   #6 (permalink)
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I agree that it looks more like a rock deflector than a bug deflector. Guess they decided it looked better than a truck bra?
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Old 09-28-2008, 09:28 PM   #7 (permalink)
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I have a Jeep Patriot and was thinking a deflector like this might help my areodynamics. If it is a "bug deflector" doesn't that keep the air from gathering on the windshield and keep it up and over the vehicle??
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Old 09-28-2008, 10:24 PM   #8 (permalink)
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well whatever it is, take it off and put it under your bumper to deflect some more air around your undercarriage!

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