Fuel economy just keeps getting better!!!
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2008 GL 320, 2007 Silverado LTZ C3500 Duramax Turbo Diesel
You guys aren't actually buying the fuel mileage indicated by the computer? The only way to really determine it is miles driven divided by gallons to fill up. Then it is subjective to angle of the ramp at pumps and cutoff poit on the nozzle. The only real way to determine is how much fuel is required over a long distance, say 1000 miles or more.
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2008 GL 320 CDI
You guys aren't actually buying the fuel mileage indicated by the computer? The only way to really determine it is miles driven divided by gallons to fill up. Then it is subjective to angle of the ramp at pumps and cutoff poit on the nozzle. The only real way to determine is how much fuel is required over a long distance, say 1000 miles or more.
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07 GL420cdi, 07 ML63, 07 CL500 and more
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07 GL420cdi, 07 ML63, 07 CL500 and more
#32
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My computer seems to be a bit too optimistic - consistently overestimating overall fuel economy by about 1-2 MPG, although the longer range mileage calculation is more accurate (which makes sense). I calculate mileage the way scottybdiving suggests, the actual miles driven divided by what went into the tank. One thing I've also noticed is that I seem to get more miles on the first quarter of the tank, than on the second, and so on, which leads me to believe the fuel guage is not exactly calibrated to the fuel level in the tank.
Just think about it:
3 tonnes, all wheel drive, climate control on all the time, air suspension compressor running all the time, huge electrical load, over 24 in the city...
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07 GL420cdi, 07 ML63, 07 CL500 and more
#34
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38 MPG in a GL CDI? Best I have ever had in my ML CDI is 32MPG, driving at 50-60 mostly flat highway. How did you get this? What was your driving style and road conditions? Please give us all your tips as we could use the help with our rising fuel prices.
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STP
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'06 A6 & '08 GL550
My computer seems to be a bit too optimistic - consistently overestimating overall fuel economy by about 1-2 MPG, although the longer range mileage calculation is more accurate (which makes sense). I calculate mileage the way scottybdiving suggests, the actual miles driven divided by what went into the tank. One thing I've also noticed is that I seem to get more miles on the first quarter of the tank, than on the second, and so on, which leads me to believe the fuel guage is not exactly calibrated to the fuel level in the tank.
We went up-n-back to Beaver Creek this weekend, as well as up-n-down to Denver yesterday. Computer said that my mpg was 19.9 since the last fill-up and the fuel gauge was sitting at 5/8ths of a tank. After putting in 12.63 gallons into the tank, my calculation showed that my actual mileage was 17.8 mpg. So, as you state, my computer overestimated fuel economy by 2 gallons.
I'm curious to let the next tank go almost to empty before filling up to see if the computer adjusts better to full tank usage.
#37
For sure Turbos are more efficient at altitude.
I fly a C185 on amphibs floats, im looking for a Bonanza or Baron.
Do you know Barron Thomas in Scotsdale?
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07 GL420cdi, 07 ML63, 07 CL500 and more
My car has a KD-Box for extra performance, but also gives better fuel economy under normal driving, by full throttle it's the same.
It was a normal day, about 72 degrees fahrenheit, not much wind and more or less at sealevel.
Mostly flat road and about 56 mph with distronic on following traffic
#39
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7.3 l/100 km is 32.2 miles per us gallon and 38.7 Imperial.
a great calculator can be found at:
http://tdiclub.com/misc/conversions.html
a great calculator can be found at:
http://tdiclub.com/misc/conversions.html
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2008 GL 320 CDI
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I do like having the turbo on the GL in Flagstaff! Acceleration is the same.
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Heh ... uh, sure it is, yeah. Just subscribe and I'll send ya a copy!
http://www.EatFreshAZ.com/
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http://www.EatFreshAZ.com/
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#44
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Some whole wheat ciabata I made. (I'm baking tonight)
![](http://i290.photobucket.com/albums/ll264/BigBrocktoon/CIMG1594.jpg)
#45
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I don't feel that left out now that the Imperial Gal. issue has been brought into the mix. The K-D box also helps. Nice setup!
BTW Steve, back in the day the Seminole was my favorite to fly also. Maybe that's what got me hooked on turbo power
BTW Steve, back in the day the Seminole was my favorite to fly also. Maybe that's what got me hooked on turbo power
![Roll Eyes (Sarcastic)](https://mbworld.org/forums/images/smilies/rolleyes.gif)
#46
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07 GL420cdi, 07 ML63, 07 CL500 and more
![rolf](https://mbworld.org/forums/images/smilies/rofl.gif)
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
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according to Kleemann the 420cdi with the K-D box it's pushing 400 bhp and 700 lbs/ft , they couldn't Dyno mine because it's 4wd
#47
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I'm definitely sold on the KD box. I have seen posts with the US spec 320 CDI's making good power, and keeping their mileage!! I think I will wait for the warranty to run out before I put one on though.
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Never flown a Turbo-Seminole (we have fun nicknames for that plane, btw), and I've wondered why the don't make them any more. Probably since it's used so much as a trainer and not really practical for much else, they decided there was too much possibility of low-time, low-experience pilots burning up the turbos, over-boosting, or just otherwise not handling the extra power at altitude. Though I will admit to having had a Seminole (non-turbo) at 13,000 feet with two aboard and about half fuel, at night. Briefly.
#50
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Nah, here's some real whackin' material, Steve.
http://www.youtube.com/watch?v=iDQQa...eature=related