CleanMPG Fuel Economy Challenge VII - Fall 2009

Discussion in 'The Daily Grind' started by PaleMelanesian, Sep 25, 2009.

  1. some_other_dave

    some_other_dave Well-Known Member

    I have a built-in advantage for Div C. The weather where I live is much milder than yours, so I should lose less FE over the "colder" months...

  2. diamondlarry

    diamondlarry Super MPG Man/god :D

    I topped off the tank after my daughter and I took the road trip last Sunday night. It did fair considering there was ~150 miles at 60 mph. I went 478.1 miles and used 6.551 gallons for 73.981 mpg.

    Edit: The mileage above should read 72.981:eek:
    Last edited: Nov 16, 2009
  3. Laker

    Laker Well-Known Member

    Hey Larry - considering the colder temps & 30% of your mileage was @60 mph, I'm impressed! :thumbs_up:

    Just logged 2 tanks. I couldn't in good conscience log the suspected short fill on 11/1 - 83.561 mpg over 566.8 miles, 6.783 gal. SG=65.6 mpg. No way that can be right. Normally I can stuff another 2+ gal after the first click. Not this time though. Car was filled on a slight downhill slope. I even attempted to confirm the short fill the following day - 76.514 mpg over 83.4 miles, 1.090 gal. SG=76.514 mpg. Yes, unsuccessfully.

    Today and 406 miles later: 55.563 mpg, 7.307, SG=73.7 mpg. This time I filled on a slight incline and was able to stuff an additional 2.3 gal. That is normal & 11/1 short fill is confirmed. Takeaway is to never fill on a decline with this car.

    Average for the these tanks 69.578 mpg :Banane09:
    Wayne, here's proof of your effective 'teaching'. ;) Result=12.69 mpg increase over previous best tank! :woot:
  4. swineone

    swineone Well-Known Member

    Before my last fill-up, I had decided on withdrawing from the contest, seeing as 3 out of my 6 most recent fill-ups were about 6-7 liters above what the Scangauge, and the car's onboard trip computer, predicted. The Scangauge has been carefully calibrated so that's not an issue, and it happens to track quite closely the onboard trip computer. In case you don't know, the practice of messing with the amount or composition of fuel in order to make a profit is quite prevalent in Brazilian gas stations, and our corrupt government is too busy stealing for themselves, or buying votes from the poor, to care about this issue.

    What's strange is that the latest wrong fill-up was on a station I hadn't had problems with before. Plus, the fuel gauge was going down way too slowly. Eventually I did a 1000+ km tank where I should have run out of fuel 150-200 km earlier. I decided to fill up on the same station and guess what, 7 liters below what the Scangauge predicted. So the two errors canceled themselves and I guess there's nothing wrong with this station after all. However, the tank before these two, which was in a different gas station, I'm 100% certain that they didn't sell me the claimed amount of fuel. This tank considerably reduced my average and I'd probably still be in first place if I had chosen to fill up in an honest gas station, but there's still time to go before this round ends and I'll try to make up for it.

    Then there's the fact that after one of these incorrect fill-ups, I was so pissed off that I decided to turn on the A/C and speed a little more, since what's the use of hypermiling if you end up paying the same at the pump because of dishonest gas stations? Of course I have no one to blame but me. Still, one of my fill-ups could have been 5 liters shorter if it weren't for this fit of rage.
  5. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    I just logged a new tank - 71.8 mpg / 820 miles. :D

    Laker - That's some good mileage. Not far from where I was last year, with an EX and worsr weather. So you did better filling up pointing uphill? That sounds backwards to me.
  6. Laker

    Laker Well-Known Member

    Andrew - that's a very nice compliment, thank you!

    As far as the filling up nose uphill being backwards, I can only report what happened. I even filled at the same pump in the reverse direction. Have you found the reverse is true with your civic - nose downhill vs. nose uphill? Of course flat is preferable to either case.

    Larry - My compliment still stands despite your 'Senior Moment Typo' :)
  7. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    I will have to test the fillup technique. I've always done it with the nose downhill and preferably leaning to the right.
  8. Laker

    Laker Well-Known Member

    Oh the things we will do to get a consistent fill up. And frustrated we become when it isn't. LOL!
  9. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    You know you're a hypermiler when... ;)
  10. drummerboy2004

    drummerboy2004 Well-Known Member

    Finally filled up... I was lucky just to pull 50 MPG with my new commute, which is mostly city. Either way, I think I should still be able to catch up to Woody... once I get used to this new commute.

  11. JusBringIt

    JusBringIt Be Inspired

    I tried filling nose uphill before, terrible! So now I always fill nose downhill. A lot more gets into the tank that way.
  12. WoodyWoodchuck

    WoodyWoodchuck Sophomore Hypermiler

    Tropical Storm IDA was brutal to me last week. That storm sat off the NC coast for days just a pounding us with rain and wind! I struggled to get several of my 30 mile commutes to at least 40 mpg when I average 50 mpg TO work and 58 mpg FROM work. I think the worst was 40.2 mpg FROM work one day, 18 mpg lower than average!!! Man, what a horrible week. Torrential rains, rivers on the roads and wind. Every commute seemed to have a 20 to 40 mph headwind. I waited to fill up and added days from this week to the tank trying to break over 50 mpg and keep my streak going, it worked but not by much!

    As y’all know, it is very difficult to bring a tank average back from near devastation, in my case this was ~46 mpg for the first 300 miles. I gained a couple tenth’s of a tank mpg by a few tenth’s of a tank mpg each segment… sloooowly.

    Bottom line, I have to drop substantially in the standings. Unfortunately this allows the whippersnapper Drummerboy to recapture Yaris domination... for the time being. So enjoy it while you can young-un, this crotchety old man will be coming back after ya!

    I might be trying out a new invention next week, if I can work one minor bug out this weekend. I made a harness and I'm going to have my 10 year old black lab, Wendy, pull me to work all next week! The only bug I have so far is she just sits there staring at me when I tell her to pull. Other than that the plan is good to go!!! Hrmm... Maybe I can try having her push instead of pull.
  13. Die2self

    Die2self Saving more by using less!

    This tank has also been troublesome here in the middle of country with wind, rain, cold(er) temps.

    440.3 miles/19.852 Gals = 22.2 Gals

    Not as bad as I was thinking but still pretty bad. I want my 24 MPG tanks back :(

    Next year I will get my 500 mile tank :)
    Last edited: Nov 30, 2009
  14. fanamingo

    fanamingo Well-Known Member

    Just added two tanks. I'm now scraping by at 126% and only beating one of the pickup trucks. Nice job besting my mileage with your Ranger, Taliesin!
  15. McTimson

    McTimson Member

    I visited my parent's house for Thanksgiving, and got 48MPG over 150 miles on the way down, which is great for me in this weather. But the next day, on the way up, I only managed 41, the winds and cold temperatures were killing my coasting.

    And of course, the next day was colder and windier, and my regular commute was only about 40. Oh well, I can try for steady 50's in the spring.
  16. some_other_dave

    some_other_dave Well-Known Member

    My next tank is done but not yet entered. I think it will drop my average significantly... :(

    And, on a related note, my battery is getting very tired. I think too much FAS with loads (especially headlights!) on has put a hurt on it, so I am limiting my use of FAS now. I have also started to need windshield clearing in the mornings again, so I need heat ASAP.

    Which may mean that I'll be sliding down the rankings soon.

  17. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    I'm using a battery trickle-charger overnight to solve that problem. $7 for a cheap charger at Harbor Freight, but it still varies its output based on the battery's charge level. I'm using 0.06-8 kwh a night, which adds up to about 20 cents over a whole tank.
  18. drummerboy2004

    drummerboy2004 Well-Known Member

    First sub 50 MPG tank since April :(

    I guess I just can't overcome the amount of city driving in my newer commute...

    I guess the bright side is that I'm still doing well above the EPA...

    Oh, and Woody, the Yarithon is yours.
  19. WoodyWoodchuck

    WoodyWoodchuck Sophomore Hypermiler

    Hold on there Drummer, don’t be too quick to hand the title over to me yet. I had to let the car idle this morning to defrost and de-ice the windshield. We had a cold rain last night and temps in the 20’s by morning that glued droplets of ice so tight that scraping did nothing but chip the scraper. Even with rain-X on the glass!!! I pulled a 42.5 mpg TO work commute that did some major damage to an already dismal tank. If I get an over 50 mpg tank, it won’t be by much.

    So, it makes for an even more interesting challenge!
  20. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Guys? How about something like this?

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