Mpg
Posting Guru
Joined: May 2004
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Originally Posted by jwhitetail
any of them a regular cab chevy duramax i have a freind thet's got one less than 3000 miles on it 25mpg and that's a fact!
I've had 2 D/A's (LB7 - 19 avg. and now an LMM 17mpg on my 3rd tank of fuel) although better then the powerstrokes - not 25mpg better.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Originally Posted by jwhitetail
any of them a regular cab chevy duramax i have a freind thet's got one less than 3000 miles on it 25mpg and that's a fact!
Elder User
Joined: Mar 2004
Posts: 853
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From: Oregon
Originally Posted by DMAX-HD
I don't buy it.
I've had 2 D/A's (LB7 - 19 avg. and now an LMM 17mpg on my 3rd tank of fuel) although better then the powerstrokes - not 25mpg better.
I've had 2 D/A's (LB7 - 19 avg. and now an LMM 17mpg on my 3rd tank of fuel) although better then the powerstrokes - not 25mpg better.
Senior User
Joined: May 2005
Posts: 311
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From: Houston, TX
I have an 08 cc, swb, 2wd as a rental and I'm not very impressed with the mileage. So far I have averaged 13.5mph mostly highway without towing. My 05, fx4, cc is having some theft damage repaired and it gets about 1.5mpg better. I have also noticed some high idle on the 6.4 while parked. About 1250rpm and very hot.
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Joined: May 2007
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I just filled up after my first tank of gas and for 465 miles of mixed highway 70% at 65mph and other 30% at 35-45mph I averaged 14.6 mpg manually calculated. This may vary next time since dealer and not me had filled the first tank but we'll see what happens as time goes on.
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Senior User
Joined: Apr 2006
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From: San Diego, CA
Originally Posted by aggiect01
I have an 08 cc, swb, 2wd as a rental and I'm not very impressed with the mileage. So far I have averaged 13.5mph mostly highway without towing. My 05, fx4, cc is having some theft damage repaired and it gets about 1.5mpg better. I have also noticed some high idle on the 6.4 while parked. About 1250rpm and very hot.
With the number of people commenting about not knowing what high RPMs mean, it seems that Ford is doing a lousy job of educating the '08 buyer about the new emissions system.
Elder User
Joined: Feb 2006
Posts: 759
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From: Central Massachusetts
Originally Posted by mattebury
The occasional high idle is the regen mode on the DPF. Exhaust is supposed to get very hot to burn off the soot in the filter. That's why there are the two venturi devices at the end of the tail pipe in an attempt to suck in some cooler air to bring the temperature at the exhaust tips down.
With the number of people commenting about not knowing what high RPMs mean, it seems that Ford is doing a lousy job of educating the '08 buyer about the new emissions system.
With the number of people commenting about not knowing what high RPMs mean, it seems that Ford is doing a lousy job of educating the '08 buyer about the new emissions system.
Excellent point, I'm going to bring it up to my local dealer so they can educate their customers.
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Joined: May 2007
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Geaufish,
Yes I have the long wheel base and the 38gal tank. I have the 18" tires though if that makes any difference. I am driving in Canada and converting all my metric numbers to the US mpg numbers to be consistant with what most of you guys are using. For Canadians who are toggling on the meter between litres/100 km and mpg you should note that the mpg stated on the meter (not that it is entirely accurate anyway) is US mpg and not Imperial mpg. You need to add about 20% I believe to convert US mpg to Imperial mpg.
Yes I have the long wheel base and the 38gal tank. I have the 18" tires though if that makes any difference. I am driving in Canada and converting all my metric numbers to the US mpg numbers to be consistant with what most of you guys are using. For Canadians who are toggling on the meter between litres/100 km and mpg you should note that the mpg stated on the meter (not that it is entirely accurate anyway) is US mpg and not Imperial mpg. You need to add about 20% I believe to convert US mpg to Imperial mpg.
Senior User
Joined: Jan 2005
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This might sound like a stupid question, but coming from someone that knows nothing about diesels or the burning off of soot in the filter, but why can't they come up with a device (something like heating elements, something like a cigarette lighter does) to burn the soot out of the filter instead of using the fuel and exhaust heat. I don't know how big the filter is or how much heat is need or if the batteries could handle that kind of amps. Again, I have no idea what it would take or if it is feasible.
Posting Guru
Joined: Jun 2007
Posts: 1,501
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From: Henderson, NV
Originally Posted by mattebury
Third tank of fuel got 9.6 MPG, mostly stop-n-go traffic on city streets. Overall average has been 10.3 MPG.
Still trying to figure out how to paste a Microsoft Excel chart so you all can see.
2008 F350 6.4L, KR, LWB, DRW, 4x4 4.10 rear end.
Still trying to figure out how to paste a Microsoft Excel chart so you all can see.
2008 F350 6.4L, KR, LWB, DRW, 4x4 4.10 rear end.
I have a 2008 F350 6.4L, crew cab, LWB, 4x4 3.73 rear end 780 miles
and i'm getting 12 in town and 14 highway. I think i will get better as it breaks in.