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I have an all stock 2003 quadcab 4x4, 47re automatic, factory straight piped from turbo back, 265/75/17 stock size tires, and a superchips flashpaq set on mileage xs. I dont want to turn this into the whole miles per gallon threads that we all see a bunch of but....

I just want to ask you guys.I checked my mileage by hand Monday morning and it came to 14.2mpg. I have a new wix air filter, new oil change, this upcoming Friday morning at 7AM I get my fliud and filter changed in the tranny. The outside temps have been at 25 degrees farenhiet or colder. Are my miles per gallon about right for my truck? I would think I should still be able to see atleast 16+mpg? I also see that when I "fill up" my lie-o-meter says DTE is 479 miles is this right? I should be seeing more miles shouldn't I?

I want to care of my "new" dodge. I baby this truck I have learned from you guys to keep it at 1800 rpm's which is right at 65mph. Ease into the throttle. Earlier today I checked my hours on it and it came up 4417 hrs/148k and some change which was 37.something per hour. Truck never fails to start on the first crank and I have never plugged it in.

I dont haul or tow anything yet. I will come summer when we go racing. Then it will only see a 5K at best load when towing.
 

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Discussion Starter #2
Forgot I havent yet changed the fuel filter as hopefully i can change that this Saturday morning also.
 

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To be honest I averge around 15mpg normal daily driving and a little better on long raod trips and a lot less pulling my trailer and rock crawler.
 

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I was under the impression after reading most other peoples post that once winter is done that I should see a 2-4 mpg increase with summer fuel. Also I watch the lie-o-meter and when the weather is warmer it says im getting better mileage colder worse.

And it appeared to me that the for the 12v engines that the 03 was the most desirable for mileage.

I also wondered what would happened if I put on 1 inch taller tires? Or should I stay away from those.
 

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your mileage should be better for a 03, if you don't have any smoke and it runs good, change the fuel filter and see if the mileage improves.
also make sure your oil level is not rising.

FWIW, i always get north of 20 MPG running empty out of my truck.

Joe
 

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Discussion Starter #6
now see sr4440 that's what I was thinking! I should see 18-20mpg. I also found a something or other next to my right side battery that has what looks like two post on it and there is a small factory wire that is not hooked up. What is this? Would the BHAF filter free up some miles?

And no it doesnt smoke although from time to time I do smell diesel fuel either in the cab or outside the truck its not bad but just enough to where you can smell it. It runs good from what I have noticed.
 

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look to see if your oil level is rising, that will tell you if you have a injector leaking.

I don't know what type of oil you are using, but if it was rotella, it smells when the heater is on and pulling outside air.

some people have lengthen the oil vent tube to stop the smell from getting in the cab.

is the filter minder getting pulled down? if not i don't think that a BHAF would be worth much.

Joe
 

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for the diesel odor, fire hazard
put some UV dye in the fuel tank and after a couple hundred miles go over the engine and underside of the truck, fuel lines and tank with a UV light.

measuring fuel mileage just on one tank is only a lesson in mental futility. 14 mpg is in the normal range of these trucks in cold winter short medium trip driving. engine seldom gets up to normal op. fuel efficient temp

do 5 tanks with your normal combined type driving. then calculate.

the overhead is only a Dodge marketing feel good device, like a porn magazine. far from the real world truth and plays tricks on weak minds.
 

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Looks to me like you should stop calling your overhead a Lie-O-Meter... if your getting 14.2 by hand you may have the ONLY DTE in the world that is correct. 479/14.2=33.7

Your mileage is completely normal for this time of year. Cold temps, more idling and fluids that are a little thicker than in the summer time. Like others have said, one tank is only a snap shot, calculate mileage per tank to look for problems, calculate it for the life of the vehicle to know true MPG.
 

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Discussion Starter #10
sr4440 I do use shell rotella 15-40. And te rest of you thanks for the input. What is the unit next to the passenger side battery with the post though. I have a small factory wire not hooked up to to it and honestly dont know which post to hook the wire to.
 

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sorry, i can't help you out on the wire. I am overseas right now and don't have my truck with me.

one more thing, if you can get a Baldwin PF7977 fuel filter, it has some of the best specs for a stock canister.


Joe
 

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Discussion Starter #12
Thanks, I put a Donaldson stock replacement oil filter on instead of the Wix. The Donaldson was only $4 and some change. I will use the Baldwin, but havent people had issues with those leaking or gelling up? I heard Donladson was really really good also.
 

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your mileage sounds normal. post up a pic of the disconnected wire & post.
 

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And it appeared to me that the for the 12v engines that the 03 was the most desirable for mileage.
Just an FYI, your truck is a 24v not a 12v. 12v's went away in 98? But yes, they and early 04 are the best 24v's for mileage.

your mileage sounds normal. post up a pic of the disconnected wire & post.
X2. Then you get a better answer.
 
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