For those claiming 15-18 mpg "City"

[DBurkhard]

Reset your computer, then drive about 5 miles while stopping every 0. 2 miles. While at a stop, sit and idle for 30 seconds, then resume speed up to 40 mpg or so.



This pretty much simulates stoplight stop and go traffic in a city.



Let me know your 5 mile mpg number.

 

[Peter Campbell]

You forgot about top speed of 12 MPH and panic stops every other stop

 

[Big Rig]

I don't know where I could find a 5 mile stretch of road where I could stop & go every . 2 of a mile but in my city driving which somewhat fits your test I get about 12 to 13 mpg. Not as good as I expected. I don't put my foot into it & drive conservatively. The torque converter doesn't have a chance to kick in during city driving because the speed limit is less than 50 mph which is where the TC kicks in with a big drop in rpm.



Big Rig

 

[Steve M]

Yep... If I stop during rush hour and fill up, I've seen mpg numbers pretty low. Sitting in traffic is using fuel to keep me cool but not going anywhere. That and the drag of the automatic transmission doesn't help when sitting still.

 

[aggieLR]

Well on the overhead computer, not by hand, I'm gettin 17. 7 mpg right now. I have a 4 mile drive to work w/ 3 stop lights in between. I reset it about 5 days ago and it has been steady 17. 7 today. I have driven some on the highway, but no more than 10 miles.

 

[2broke2smoke]

geese man if your only driving 5 miles and have to stop every 1000' then take the bus

 

[aggieLR]

I'm from Texas. Not too many buses run around here, just to the A&M campus and back, not to where I work.

 

[Wiredawg]

How about driving in town/city?

Why not get the real thing? Fill up, drive around town for an hour then fill er up again. Just like Coke, that's the real thing



No kidding we get about 14 (me) and my wife gets around 17 around town in our 3d Gen. The truck has 26K miles.



PS: My wife get's 2-3 mpg better than me know matter wut. Must be my heavy foot.



Wiredawg

 

[Rosco]

My last tank of fuel I hand calculated my mileage for the heck of it. I filled the tank to the very top (fuel in filler hose) and did my normal stop and go around town driving. I ran down to about a 1/4 tank of fuel and then refueled using the same fuel in hose method. By doing the fuel in filler hose method you are dead accurate with your fuel consumption. My economy was 15. 1 MPG and most likely that's on a winter blend of fuel. Also, My truck has just over 5,000 miles on it so I don't consider it fully broken in.

 

[XJSuperman]

I have done this... and seen as low as 10MPG over a 5 mile stretch. My "commute" to work is only 5 miles one way... BUT there are not traffic lights every 2/10's of a mile... some are closer but most are at least 1/2 to 1+ miles apart.



I still don;t see how a 5 mile stretch is any indication of TRUE fuel mileage.



I have run nearly a full tank (31 gallons) under conditions of NEVER going over 45 MPH and averaging more at 30 MPH... stop and go traffic AND sitting and idling. For this type of driving I get right at 15 MPG.

 

[loncray]

How long did it take you to get to the top of the filler neck? I get so much foam, I give up after getting to the next even dollar amount.

 

[Rosco]

Originally posted by loncray

How long did it take you to get to the top of the filler neck? I get so much foam, I give up after getting to the next even dollar amount.

It takes awhile, probably an extra 8 minutes. This is why I only bother when I feel like checking my mileage. Usually I round up like you after the pump clicks off and thats it. You can squeeze another 3 gallons or so in if you are patient

 

[CoastyAV8R]

I think different people have a different interpretaion of what city driving is. For me, city driving is a road with stop signs or traffic signals, not necessarily the bumper to bumper traffic that you seem to encounter. Will your mileage be different from mine even though we both call it "city driving"? Heck yup. Take people's outrageous mileage statements with a grain of salt. There is no truck out there that will pull down 30 mpg unless it is driven at 55 mph with a tail wind down hill. The stop and go traffic absolutely stomps mileage as it takes a lot of fuel to repeatedly move a 7,000 lbs truck...

 

[Crunch]

Originally posted by 2broke2smoke

geese man if your only driving 5 miles and have to stop every 1000' then take the bus

Bus? I don't know, that sounds awfully close to public transportation if you ask me...

 

[PJ]

If you can afford the truck, you can afford the fuel. . Period. My truck has avg of 15-16 in town with the stop and go, up hill and down, with 20 to 21 on the highway at 65-70 mph. Love the economy with diesel being 10 cents less than unleaded regular in my part of town. I have about 5500 on my 305 hp now and will be making another 1000 mile round trip to Calif next week. so far, my only real problem is paint chips and the right side front speaker ratteling.

 

[XcumminsX]

Originally posted by PBJohnson2

If you can afford the truck, you can afford the fuel. . Period.

I agree.

 

[KBennett]

Those of us with a manual trans should get better mileage. The torque coverter slips a lot on an auto at takeoff.



I average 17. Sometimes I am as low as 14 if I am goofing around and sometimes 18 when I see less stop lights. Most of it goes out the tailpipe at a stoplight. Maybe I should just keep going



Highway mileage concerns me more and I am pleasantly surprised to see such a low dropoff under load.

 

[aggieLR]

Tonight a few buddies ran to Tomball, on the way back, I was runnin w/ a powerstroke. We were runnin about 90-95 down the highway (long straight stretch). I reset the overhead thing, and at 90 mph it was reading 16. 7. I didn't think that was too bad.

 

[Iguide]

quote:Originally posted by PBJohnson2

If you can afford the truck, you can afford the fuel. . Period.



That is true, but you can be smart about it and efficient instead of FEULISH.

 

[DFrank]

[

I reset the overhead thing, and at 90 mph it was reading 16. 7. I didn't think that was too bad. [/B][/QUOTE]



Wow, if i do that i get just under 12mpg, In "real" city stop and go, around Boulder which has way too many lights i get 13-14.



I suspect my oversize lumber rack kills my high speed mileage with horrible wind drag.