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Old 10-10-2012, 04:55 PM   #11
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Seann45, I had a 2003 Duramax we bought in 2002 and put over 103,000 miles on it before trading it in. Never once let the engine idle for 2-3 minutes to cool the turbo off and never had a problem. I then bought a 2011 Dodge with no DEF requirement and the mileage, even with the six-speed manual and 3.42 gearing, was getting worse as it got mileage put on it. Bought a new GMC D/A combo and drove it on the highway all by itself yesterday and, according to the DIC, got 19.5 over about 165 miles of highway at 70 mph. Only have a little over 3,500 miles on it, can't wait until it gets broken in. I think the consensus is that vehicles with the DEF system get a little bit better mileage than do the Dodges without the DEF.
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Old 10-10-2012, 05:49 PM   #12
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How did you get a Dodge diesel with 3:42 gears?
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Old 10-12-2012, 10:58 PM   #13
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Dodge is getting DEF next year. http://www.motortrend.com/roadtests/...st_look/?ti=v2

Also rumors of a smaller Diesel being available in the 1/2 ton trucks. That would be nice!

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Old 10-13-2012, 04:55 AM   #14
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The only time I would even bother letting my Duramax idle for two minutes before shutting down would be if I was pulling a major hill with my heavy 5th wheel in tow in the hot summer time and pulled into a rest area while still pulling hard. By the time you pull off of whatever road you are on and get to a parking place you have been idling or at very low power for plenty of time for the turbo to spool down. Yes it is still turning, but not at max speed.

All I do for diesel maintenance is oil changes every 5,000 miles including filter (I know my computer says it doesn't need changing that frequently, but oil is cheaper than an engine), fuel filter very 10,000 miles (computer says it isn't needed either, but filters are cheaper than an engine or injectors). The air filter is changed when needed.

Other than that I just drive and enjoy the power.
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Old 10-13-2012, 11:03 AM   #15
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Quote:
Originally Posted by edatlanta View Post
All I do for diesel maintenance is oil changes every 5,000 miles including filter (I know my computer says it doesn't need changing that frequently, but oil is cheaper than an engine), fuel filter very 10,000 miles (computer says it isn't needed either, but filters are cheaper than an engine or injectors). The air filter is changed when needed.

Other than that I just drive and enjoy the power.
I am with Ed on the Oil and Fuel Filter change frequency, agree early oil changes are much cheaper than a Diesel Engine.
Also I do not let mine cool down either when I stop unless it has been under a heavy load just prior to stopping.
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Old 10-15-2012, 05:24 PM   #16
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Originally Posted by Grumpytrkr View Post
Chevy/GMC does use the DEF in their newer trucks. It is a tank under the hood. That is where my friends's is on his truck. Dodge doesn't require it currently, however, I was told from the Dodge dealer that the Feds are going to mandate DEF in all light duty diesel engines, starting in 2013. My truck is a 04.5, so it will run without the DEF.

Safe travels,
DEF tank underhood and dont wait until you have to get it at a convience store,mucho denero.I run mine until "oil change light "comes on usually right at 10K miles,oil & filter
changed with Rotella synthetic,fuel filter will need a change 20/25K miles,transmission filter 25K(theres an external & internal),clean the fuel cooler near the tank under the truck from time to time especially if a lot of dirt roads.Air filter when guage shows to and only use a DELCO cause it flows the best of any OEM style filter on a GM ,some test results on Duramax.com show this, really not much different than a gasser.
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Old 10-19-2012, 12:04 PM   #17
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Quote:
Originally Posted by jal0710 View Post
Seann45, I had a 2003 Duramax we bought in 2002 and put over 103,000 miles on it before trading it in. Never once let the engine idle for 2-3 minutes to cool the turbo off and never had a problem. I then bought a 2011 Dodge with no DEF requirement and the mileage, even with the six-speed manual and 3.42 gearing, was getting worse as it got mileage put on it. Bought a new GMC D/A combo and drove it on the highway all by itself yesterday and, according to the DIC, got 19.5 over about 165 miles of highway at 70 mph. Only have a little over 3,500 miles on it, can't wait until it gets broken in. I think the consensus is that vehicles with the DEF system get a little bit better mileage than do the Dodges without the DEF.
IF you trade at 103,000 you are just passing on the problem and not knowing it... if you want a real education get a pyro gauge and see what your temp is when you pull over...
If you check the diesel forums you will see they all say let it cool down first...
I hope to keep my Dmax for at least 500,000 miles.
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Old 10-19-2012, 02:09 PM   #18
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As previously posted, check out dieselplace.com. My '11 was my first diesel and I learned a ton on that site. Everyone will give you different advice about maintenance, the only consistent advice that everyone will agree on is to get your fuel from a reputable source that sells plenty of it.
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