Improved gas mileage on my 98 3.9 magnum - Dodge Dakota Forum : Custom Dakota Truck Forums
V6 Performance Upgrades for your 3.7 or 3.9 V6

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post #1 of 24 Old 07-22-2010, 02:19 PM Thread Starter
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Improved gas mileage on my 98 3.9 magnum

Wanted to share with the fellow v-6 members. For the past 6 months, I have been getting terrible gas mileage in my truck. been averaging 10 in the city and 18 on the high way and I drive my truck very slowly. It has new tune up, new o2's, filters, coil. just was getting terrible mileage and the a/c was killing the truck. I just decided to put some new plugs. been reading about the new E3 platinum plugs. they sell them at advance auto parts. while there went back to the original breather box and bought a k and n filter. the plugs and filter was under $80 with my military discount. So I installed both and then filled the truck up. I have been driving in the city with the a/c on and stop and go traffic. i got 239 miles out of 14 gallons. WOW. and the power the truck has is unbelivable. I did the math and it equaled to almost 17 miles in the city. what a differance. I am going to test the truck on the highway this weekend and will post the mileage on their. What are some other v-6 members getting?

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post #2 of 24 Old 07-22-2010, 02:34 PM
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I had an 01 3.9 that was getting 7-9 city. I hated that truck
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post #3 of 24 Old 07-22-2010, 04:37 PM Thread Starter
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Talking

Quote:
Originally Posted by MOPARVICK View Post
I had an 01 3.9 that was getting 7-9 city. I hated that truck
thats why i got this.i get 50 miles to a gallon.






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post #4 of 24 Old 07-22-2010, 04:50 PM
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ooh same exact one im picking up from a buddy of mine but its black/red $500 sorry for the thread jack

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post #5 of 24 Old 07-22-2010, 05:15 PM Thread Starter
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Originally Posted by dodge_408 View Post
ooh same exact one im picking up from a buddy of mine but its black/red $500 sorry for the thread jack
well i got mine for $10,500 out the door and he also threw in a arai helmet worth $1000 bucks. so i got a deal on mine. its a 09

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post #6 of 24 Old 07-22-2010, 06:02 PM
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thats not a bad deal at all mine is an 05

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post #7 of 24 Old 07-22-2010, 07:41 PM
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I get about 5 mpg in the city




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post #8 of 24 Old 07-22-2010, 07:47 PM Thread Starter
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Quote:
Originally Posted by deanler View Post
I get about 5 mpg in the city
wow i do not know how u can afford it. i know the 9 miles was killing my budget lol

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post #9 of 24 Old 07-22-2010, 07:56 PM
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see sig :P Cuttin Cat out tomorrow and got my soft tonneau cover back on.

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post #10 of 24 Old 07-22-2010, 08:03 PM Thread Starter
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Originally Posted by 98'_DAKOTA View Post
see sig :P Cuttin Cat out tomorrow and got my soft tonneau cover back on.
let me know if cutting that cat gives u any better gas mileage!!

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