Hypermiling past 55mph = better MPG?!? In a pickup?!?

[JBPHOTOGRAPHY76]

I agree with ajbkid I have a 1998 4x4 v-8 f150 and I get 25.75 highway but at times I get a readout of 35+ mpg but thats not my actuall MPGS . I get 16 in town and 25 hwy but its rated at 11 city and 17 highway.

[ajbkid]

This is not ur real mpg. Use the "avg" gauge and not the "mpg" one.

the "mpg one only shows ur current mpg.

You may want to read up a bit on the scangauge2 a bit, or take a quick peek at the manual.

If i played by ur rules, my diesel f350 4x4 whould be getting 37 mpg (obviously not true. I get 21 highway).

the right thing to do is put the "mpg" over the "avg" on ur sgII.

[Scoomando]

Iv installed a hydrogen generator on my truck and was wondering where I can get the mpg gauge u have? Greatly appreciate it.

[ryanathan2]

you would really have to take the average over a fairly long distance at exactly 70mph the entire time and compare it to 55mph. You can get 60mpg going up hill if you can momentum and are barely touching the gas.

[DdgeShelby]

@GarrettKeetley

all info on the video details..

[DdgeShelby]

@GarrettKeetley

I'm sure it does, but my vehicle is a truck with a full frame..

Quite a bit of difference car vs truck for fuel economy.

also its a gasoline engine.. your TDI Jetta should easily pull 55mpg, if not, it mite need some work..

Considering my trucks rated for right around 24mpg highway, I think my experiment turned out pretty well.

[Djonemore]

going downhill?/

[DdgeShelby]

no...

[pablosrosarito]

Volumetric Efficiency......some cars are made to reach their peak efficency at different rpm's 55 mph rule doesnt apply to everyone sadly, Its just a general rule of thumb. My bmw gets its best mpg at around 70 mph where as at 55 it feels like its trying to lug around its own weight

[oisiaa]

It is likely a calibration error.

[DdgeShelby]

yup..

[zel588]

maybe the scanguage unit is inacurate and needs calibration

[DdgeShelby]

that is more than possible LOL

[Xringer]

Yeah, maybe he did FILLUP after a 20 gallon fill and entered 10 gallons. :)

My SG2 seems to be pretty accurate these days. At my last fill up, the gallons used was dead on.

Maybe that pickup was going slightly downhill?

My SUV can hits 40 MPG sometimes. That's when I know it's downhill, even if it looks flat.

Steep hills at 70 MPH gets me 70 MPG.. ;)

[BriscoCountyJr23]

My LT1 powered Caprice has also manually recorded fuel economy of over 35 MPG at 69 MPH when doing a loop on a stretch of local highway.

[deanjet]

Let me guess, you are driving down hillllllllll

[DdgeShelby]

nope, not on this stretch of highway..

[deanjet]

OK, an 18 wheeler is pushing you?

[DdgeShelby]

not that I'm aware of.. ;)

[TacomaRacing7]

hmm idk but it works fo me unless im otherwise wrong

[jq320]

That seems about right actually... some cars are more efficient at higher speeds, my friend's 1991 Mercury Grand Marquis gets its best fuel economy at 80 and burns gas like crazy at 55.

[shhitsmagee]

2500 is a rather low rpm, perhaps your engine has the best comprimse of power and fuel efficency at that speed. At high rpm the car is burning excess fuel trying to make the tires go faster than the momentum pushing them. And extremely low rpm (500-1500) you burn fuel slow but you have to pull all that weight around without going very fast.

Some cars are geared shorter and would be at 3k-4k rpm at 70-75mph, probably less fuel efficent than if they went 50-60.

The heavy truck + low rpm