Better fuel mileage trick - Dodge Cummins Diesel Forum

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post #1 of 64 (permalink) Old 02-28-2006, 06:24 PM Thread Starter
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Better fuel mileage trick

I am going to share some info. I have not done this mod yet but will for several reasons.

I was talking to my DM today and was talking about my new truck purchase. He was asking me about what mods I was going to do and I told him I won’t be doing any for a while for power but will be for Mileage. That got us on the subject and he told me a trick that another Service Manager had done to his own truck from one of my competitor stores.

He installed the tailgate spoiler from the 1500 trucks on his 2500. My DM and he got the idea from Chrysler themselves at a class in Las Vegas when they talked about new products. One thing that was talked about is why the G.M. trucks had been getting better fuel mileage than the Dodges. They said that in wind tunnel testing they found that the advantage the G.M. trucks had was the tailgate spoiler. That is why they have added the spoiler to the Dodge 1500 trucks.

Why did they not do it to the 2500’s and the 3500’s you ask? It’s because the government does not mandate that the fuel mileage averages to be advertised on the window stickers, so it has no advantage to Chrysler when making the vehicle.

I have not done this to my truck yet but will soon and Ill tell you what gains I find. Chrysler claims to have gotten a gain on the 1500’s an average of .7 MPG more. The other Service Manager that has done this to his 2500 Cummins is claiming to get .4 to .5 MPG more.

The other reason I will be doing the mod is because my truck is black and when I go to shut the tailgate I tend to scratch the center edge when the truck is dirty.

The part # for this is Mopar Accessory part # 82209867 and retail is 89.00. The dealership that installs it will ask for about a half hour labor so you will be looking at about 130.00 or so depending what the labor rate is at the store that does the work.

I think most of us could to the mod ourselves.

Enjoy. JOSH

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post #2 of 64 (permalink) Old 02-28-2006, 08:43 PM
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Thanks for the info Josh,,,,,,,,,get some pics when you do the mod.

Cheers, Kevin
post #3 of 64 (permalink) Old 03-01-2006, 10:25 AM
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I heard this a while back. I may do it also in the future....

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post #4 of 64 (permalink) Old 03-01-2006, 10:47 AM Thread Starter
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Just to clear the waters. This improvment is only going to be seen on highway averages not intown driving.

Yes I know but some might ask!

JOSH
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post #5 of 64 (permalink) Old 03-01-2006, 12:58 PM
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Anywhere we can find pics of this? If it looks the ones they put on the chevys I am interested. I do a lot of highway driving so every bit helps. But if it looks like some of them spoilers them mescans and blacks have on some of them low riders or whatever you call them the ones with the big mufflers you can forget it.

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post #6 of 64 (permalink) Old 03-01-2006, 01:21 PM Thread Starter
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The spoiler that I am talking about is the same that the 1500 trucks have on it. Yes it is simillar to the chevys. This is a factory part that Chrysler does not install on the 2500's and the 3500's.

I will look for a picture.

JOSH
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post #7 of 64 (permalink) Old 03-01-2006, 01:37 PM
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I guess I need to look a little closer at the newer trucks I have not noticed it.

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post #8 of 64 (permalink) Old 03-05-2006, 10:17 AM
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I saw one on a 06' Ram1500 shortbed. It's flat on the top with a short lip extending out the back. Looked nice. Don't see how it could help with mileage that much. But then again, what do I know...:fist:

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post #9 of 64 (permalink) Old 03-06-2006, 07:23 AM Thread Starter
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It has to do with the way the air comes off the back of your bed. From the way it was expalined, it it is not there the air tends to drop down past the tailgate and cause friction all the way down the back of the truck.

With the spoiler lip there, the wind does same thing but it drops off further from the tailgate and that way it does not drag down with friction. That is where the fuel mileage comes from.

JOSH

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post #10 of 64 (permalink) Old 03-14-2006, 03:15 AM
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i put mine on a few weeks ago just cause i liked the way it looked. i will post pics tomorrow...only crappy part was drilling and installing metal "molys" in your tailgate...once you put this thing on, you really arent gonna wanna ever take it off.
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post #11 of 64 (permalink) Old 03-14-2006, 07:55 AM Thread Starter
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I installed mine this last weekend. Your right, once its on there is no going back. I really enjoy the way it looks and I really like using it to hold on to when closing the tailgate. I was towing the last couple days so I really haven't had a chance to check if I got a mileage gain or not. I will post when I do.

JOSH

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post #12 of 64 (permalink) Old 03-14-2006, 09:29 AM
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Lets see those pics!

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