Gas Mileage Test

[Grumpaw]

Just a FYI: Last weekend I did a 700 mile run AFTER correcting my speedo for my summer tire size. What a difference in the mpg calculated by the truck. Previous best I could do was 18 mpg (15 in the city). On the trip, the calculator gave a overall avg of 25.6 mpg (95% interstate cruise control driving). Actual fill up gallons divided in to mileage gave 24.3 mpg.

During this trip I used Google Maps (and the on-boarded Nav, just to compare). Based on G Maps GPS speed reading, Cruise Control speed setting was about 3 mph over stated. So 75 mph was really 72 mph. This suggests that the 632 revs per mile of the 275/55R20 wheel/tire combo as calculated by RevsPM (revolutions per mile Rev-per-mile Calculator)=((5280*12)/(2r* π) is a little off using a calculated circumference of 100.25 inches (where Circumference = diameter * 3.14159; diameter = ((275 * .55) * 2) + 20) inches.
Need to do a rollout measurement of the wheel/tire to get the actual circumference and see what the calculation then shows. Guessing more like 637 RevsPM.
Stock wheel/tire on the Lariat were 265/60R18 for a RevsPM of 661.

Anyway, relying on the on-board calculator is only as good as the speedo calibration.

Several questions......
Were these computations done at high tide or low tide, taking into consideration Mn is not located on an ocean shoreline ???
What was the phase of the moon as that might have some input on the Revs Per Mile...closer to the moon puts much more strain on a combustion engine as the closer the moon is, it is possible the denser the fuel mist becomes.
And, were there any sunspots noticed as you well know that sunspots play havoc with electronic devices (the computer, cruise control, GPS signals) thus providing wrong data ???

Sponsored

 

[Dgc333]

Anyway, relying on the on-board calculator is only as good as the speedo calibration.

Even doing the calculation by hand Is only as good as the speedo calibration AND how accurately you can fill the tank to the same level.

 

[Grumpaw]

Even doing the calculation by hand Is only as good as the speedo calibration AND how accurately you can fill the tank to the same level.

Puts me at a distinct dis-advantage....lost my right pinky....only have 9 to count with.....
Plays hell when I have to count to tenths of a gallon.

 

[PltFX4]

Several questions......
Were these computations done at high tide or low tide, taking into consideration Mn is not located on an ocean shoreline ???
What was the phase of the moon as that might have some input on the Revs Per Mile...closer to the moon puts much more strain on a combustion engine as the closer the moon is, it is possible the denser the fuel mist becomes.
And, were there any sunspots noticed as you well know that sunspots play havoc with electronic devices (the computer, cruise control, GPS signals) thus providing wrong data ???

Yes to all... did not want to bore you with the fine details...

 

[PltFX4]

Puts me at a distinct dis-advantage....lost my right pinky....only have 9 to count with.....

If I'm +/- .5 mpg I'm happy. (LOL... lost all 5 on my left hand... just have to use the right twice as much)

 

[9zero1790]

if i really try hard to get good mpg i can milk 23 mpg. but its no fun. when i drive the way i prefer and do normal 5g ranger stuff 20-21 is where mine always averages out to. i know thats not fantastic however i feel like in a truck i use as a truck that 20 is not so bad considering the abilities of the truck.

 

[Cabose-1]

2022 xlt fx2.

Empty interior i have a swing out box in the bed with some tie down straps soft shackles and stuff. So empty bed too. On my last fill up. All stock vehicle. Well not quite. I have a tailgate strut assist.



14 MPG

 

[Blue Streak]

Puts me at a distinct dis-advantage....lost my right pinky....only have 9 to count with.....
Plays hell when I have to count to tenths of a gallon.

I'm with you Steve. I can only get too 1 & 1/3 on my right hand.

 

[5thranger]

Another mpg discussion is no big thing. How come nobody wants to talk dampers ?
Would it get more attention if I started one with all caps?

 

[Jason B]

To get a more accurate feeling for MPG, you need to manually calculate fuel vs miles driven over several tanks. 1 tank of gas won't get an accurate measurement as the ECU is still fine tuning its tables for optimum fuel/air mixtures.
But I have no doubt that the E0 will gain a couple MPG's as you have shown.

 

[Bud]

Towing my little boat, which weighs about 2,200 with a trailer, I average around 20 mpg. Towing my tiny boat, which weighs about 800 pounds with a trailer, I average about 24 mpg. This is on a 150-mile run using freeways and back roads. I stay at the speed limit which is 55 mph towing.

 

[ArchitectThom]

I got 443 mpg from the top of my drive way down to the bottom. In reverse. Beat that.

If I keep resetting my mpg meter every time I let up on the gas, I could probably get 500 mpg, too. Sooo... nananananana.

 

[Fazzie01]

I got 443 mpg from the top of my drive way down to the bottom. In reverse. Beat that.

If I keep resetting my mpg meter every time I let up on the gas, I could probably get 500 mpg, too. Sooo... nananananana.

Fake news! These trucks top out at 99.9 MPG lol!

 

[ArchitectThom]

Fake news! These trucks top out at 99.9 MPG lol!

What???? No way! You just wait till I photoshop my mileage number into the picture of my dash and I'll show you I get 443 mpg over the course of going down my 40 ft. driveway.

Don't know what to tell ya, man. I get that gas mileage every day despite carrying 4000 lbs. of used toilets on a 1,500 lb. trailer with 1,300 lbs of toilet paper in the bed every single day.

My truck must just be so much better than yours or I am just that much of a better driver and totally a better person than you because I get WAY better gas mileage that is completely against the laws of physics and human reality.

 

[ArchitectThom]

Fake news! These trucks top out at 99.9 MPG lol!

See???

Sponsored