Daily gas mileage blab thread

[NeilBlanchard]

Out of the last 140 tank fillups, only four were below 40MPG. Two of those were during the dead of winter, and the other two were right near the beginning of my learning to ecodrive and with a few ecomods...

[pletby]

Today I filled up and for the first time I have gotten my three tank average over 30mpg achieving my goal. Also today I completed my first trip over 40mpg. Woo woo! Instant feedback rocks.

New goals: 35mpg 3 tank average and 30 mpg 90 day average. I may have to bite the bullet and get the engine fixed up. 2 O2 sensors are shot. Always when I'm broke.

[Fat Charlie]

I just finished my first full tank with the Ultra Gauge this morning. I had some towing to do and I was looking at a record tank, so I ended it early to massage the numbers. Early- at 378 miles! I never could have called it that in the old days; I'd have been bragging about how close I came to a 400 mile tank. What was odd was that none of my numbers agreed. The car read 33.6 while the Ultra Gauge read 35.7, but the pump reported 32.55.

The pump could have stopped early. The car's display could have been off- in the 30s is so far away from the car's expected mileage that a small inaccuracy would become a large gap after a few hundred miles. When the mpg is high it jumps in increments of 0.3, so it could still be within one mpg of the pump. The Ultra Gauge is underestimating fuel consumption, though. I have fuel level and distance to empty on my screen, and it said I had 6.19 gallons remaining at fill up, which was 1.1 gallons higher than the pump says I had. If the pump did stop short then it's even farther off. Looks like it's time for me to RTFM.

The 60 miles I did with the trailer were quite amusing, though. I was getting better mileage than I expected- DWLing up hills that I would have expected 20 mpg on without the trailer, I was getting 26. I think it was acting as a pathetic boat tail. Interesting...

[Fat Charlie]

Calibrate Distance
Menu - Vehicle Setup.. - Calibration.. - Calibrate Distance
Use this menu item to calibrate all Distance Gauges. This calibration also directly affects the accuracy of all Speed, MPG and DTE gauges.

Doh!

[Steven Wrigley]

I dont know how accurate this is. I had 1 gallon in one of my trucks tanks and my dad took it to work and got 17.3mpg! In a 5.8liter 4x4 F150 XLT! He didnt hypermile either! With some aeromods I should get 20mpg!

[JethroBodine]

First kilo km tank in the pipe right now. 645 miles and counting, two weeks between fills as of tomorrow, and I'm going to ride it out until (at least) Tuesday. Still a quarter tank left. Should be easily over 700 by then.

[graydonengineering]

Originally Posted by pletby

Today I filled up and for the first time I have gotten my three tank average over 30mpg achieving my goal. Also today I completed my first trip over 40mpg. Woo woo! Instant feedback rocks.

New goals: 35mpg 3 tank average and 30 mpg 90 day average. I may have to bite the bullet and get the engine fixed up. 2 O2 sensors are shot. Always when I'm broke.

O2 sensors are a big deal when it comes to MPG. You will probably gain 10% after they are changed. They are expensive so they will take a while to pay off with savings.

The humidity is through the roof right now and I swear the air resistance or engine performance seems off. Not sure which but I am haveing a hard time keeping up my 30 average. May be decreased intake temp also. I got 28.5 this morning, the worst mileage in a very long time. Still respectable but I was hoping for some great numbers after installing the last 1/3 of my belly pan. Looks like I have more work ahead to get those number up consistantly!

[graydonengineering]

Last weekend I hit a new new comute record, 35.4 one way, 33 average both ways! I still have work to do on my rear wheel wells and belly pan. Once I am done with that, I think I will also add a small air dam to address the still exposed front suspension.

Last night I filled my tires up a bit more. I did have them set at 40 all around vs. 33 factory recomendation. I went for 44 front (max sidewall) and 42 rear. What a differece! I left for work a bit late so I was in a bit of a hurry and even still hit 33.5 on the way in. The ride is not as soft but I like the positive feel in the corners. My tires have worn quite a lot on the outside corners anyway runing factory presure so I believe I will get a more consitant wear pattern this way anyhow. The higher presure should take some of the load off the outer edges. I have become more and more agresive in corners.

With the belly ban and mostly sealed engine bay, my intake tems are higher and I did end up needing to run higher octane gas to get full power out of my engine durring the hot summer temps. Intake temps have been in the 110 to 140 range. It really felt like a slug befor I filled up with midgrade on the current tank. I will plan on switching back to regular after summer. I had to do the same thing with my Honda Reflex 250cc bike a few years back. High temps do lead to pre-detonation and the higher octane corrects for it in my experience.

This tank is certainly on track to be my best so far. I believe I will be at 31 average.. Maybe even slightly better which a far cry from the days I really strugled to get over 25 mpg only 6 months ago!

[Arragonis]

This is just an SG2 prediction but I'm on 192 miles in this tank and the SG2 is predicting 2.7 gallons (imperial) to fill up. Which could be > 70 MPG.

I'm tempting fate here of course, the schools here go back tomorrow so traffic will be a pain in the soft parts.

[Fat Charlie]

Originally Posted by Arragonis

...the SG2 is predicting 2.7 gallons (imperial) to fill up. Which could be > 70 MPG.

Way to go! Good luck with school.