Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Pickups Diesels Diesel Fuel Economy and chips
391 messages, Last post on Oct 28, 2009 at 4:28 AM
You are in the Diesels Forum. Your Host is kcram
|
Replying to: kcram (Apr 24, 2006 6:15 pm) They both have about 12000 miles on them and are in great shape, the 04 is $29800, the 05 is $31700. I like the color of the 05 ( more warranty left on it)but I have heard that the early 04s have the older engine and gets better fuel mileage. I've heard the 05s only get about 14-16 empty, and 12-14 loaded(depending on what you are towing of course). I've also heard the 02-early 04 engine will get 20+ empty and 16mpg towing. Is this true??? Can you add the locking lugs and Quadzilla chip to the 05 and get the fuel mileage compareable to the early 04?? Thanks for any help, I've never owned a diesel and need some help. Any issues I should be aware of with either engine??
|
|
|
Replying to: snowmanx (Aug 20, 2006 10:03 pm)
|
|
|
I've narrowed it down to a early 04 2500 4x4 QC short box or a 05 2500 4x4 QC short box, both are pretty much identicle with options, both are SLT, tow, single cd, power every thing etc. They both have about 12000 miles on them and are in great shape, the 04 is $29800, the 05 is $31700. I like the color of the 05 ( more warranty left on it)but I have heard that the early 04s have the older engine and gets better fuel mileage. I've heard the 05s only get about 14-16 empty, and 12-14 loaded(depending on what you are towing of course). I've also heard the 02-early 04 engine will get 20+ empty and 16mpg towing. Is this true??? Can you add the locking lugs and Quadzilla chip to the 05 and get the fuel mileage compareable to the early 04?? Thanks for any help, I've never owned a diesel and need some help. Any issues I should be aware of with either engine?? |
|
|
Replying to: dwd (Aug 20, 2006 4:30 pm) Therefore your true mpg values would be 1.087 times what you have reported. So, e.g. 19.0 mpg from an uncorrected odo reading would actually be 20.7 mpg. And if your speedomoter read 70 mph you were actually going 76 mph. The power required to overcome air resistance rises strongly with increasing speed (NASA) so the engine was having to put out more power at the wheels which would act to decrease true mpg. It is true that these larger tires will decrease engine rpms by 8.7% at the same true speed and this could improve fuel economy especially on level ground, lightly loaded, but it almost certainly would not balance out the increased air resistance, and it would definitely hurt hill climbing performance and pulling force in any gear. Also these wide off-road tires are going to have large rolling resistance compared to tires designed for pavement. If you are really interested in getting maximum mpg then think about the tires you replace these with, but don't go overboard on getting low rolling resistance tires that don't have good traction, especially on wet roads. It does rain in the Texas Hill Country occassionally, doesn't it? You don't want to slide off the road into a gulley some rainy night when a deer jumps out in front of you. Wouldn't be good for your truck, for you, and maybe wouldn't even save the deer. Calculations: Dia 315/70-17 = (315mm)(1in/25.4mm)(0.7)(2) + 17in = 34.36in Dia 265/70-17 = (265)(1/25.4)((0.7)(2) +17 = 31.61 in 34.36/31.61 = 1.087.
|
|
|
Replying to: jim314 (Aug 21, 2006 4:00 am) I live and work on a ranch in the hillcountry, it's prety rocky and rough. The tires are great around the ranch but I don't think the reduced mileage is worth it. When I replace the tires I will change tire size not the type of tire. I have to have an off road tire for the ranch and getting to it, I live about 12 miles down a gravel road. By the way, rain would be wonderful we are in the 2nd year of a drought and my ranch and cows don't think it's funny anymore. As far as the deer go, if I were a deer i wouldn't count on me swerving. I've lost a few friends that way and my ranch hand bumper would not be kind to bambi. Thanks, dwd |
|
|
Does anyone know why the 06 PS Diesels are getting worse fuel mileage than any of the previous PS Diesels? I have a 06 SB F350 4WD 6.0 Diesel that will barely get better than 12 mpg. I have a friend with the same truck and the same issue. I had an 02 LB F350 4W PS Diesel that consistently got 16- 18 mpg. Both are/were chipped up and have/had tons of hp. I just think I should get a lot more mpg with this new truck. |
|
|
Replying to: wgreen4 (Jun 23, 2006 5:06 am)
|
|
|
Replying to: snowmanx (Aug 20, 2006 10:06 pm) |
|
|
Replying to: dwd (Aug 20, 2006 4:30 pm) I've heard the 20mpg stories too, but I'm not even close!!! |
|
You are here:
Forums
Pickups Diesels Diesel Fuel Economy and chips
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2011 Ford F-250 Super Duty
2011 Chevrolet Silverado 2500HD
2010 Dodge Ram Pickup 2500
2010 Ford F-350 Super Duty
2006 Chevrolet Silverado 3500
2010 Dodge Ram Pickup 3500
2011 GMC Sierra 2500HD
2006 GMC Sierra 3500
Browse by Board
Browse by Topic
Today's Chats
