There is alot of talk about this DPF delete stuff. First of all I am no tree hugger but I do like to help the environment if I can. So my initial opinion is that the DPF is good for our environment and should not be removed. But at the same time how much fuel mileage and power does it really rob? So the question is has anyone done this and are there actually any real numbers and data on the mileage or power improvements? IMO if the delete worked well and the mileage jumped by 2-3MPG or more it would MAYBE offset the negative affects of not having the environmentally friendly DPF by using less fuel. I am just wondering if there are any real numbers to support doing it?
Thoughts?

 

One other thing to consider,,,the particulate matter the dpf eliminates from the atmosphere has been labled a carcinogen.

Sure, it doesn't make much sense to consume more natural resources to make cleaner air, but technology hasn't caught up to allow for clean, economical, and renewable fuel sources.

 

I have several concerns about the DPF. Yes, I do understand it's purpose is to produce less emmisions. But when I'm driving down the highway getting 17-18 mpg, and then the truck goes into regeneration and my mileage goes down to 8 mpg, well that's fuel that I could have used to acctually get some work done. We have to pay more money for a fuel that takes more refining, has less power, and gets less mileage. I also really kinda question that actual effictiveness of the DPF. Yes it does catch almost 100% of particulate matter and "destroys" it. But the first law of physics states that matter can not be created nor destroyed. So obviously what makes up that soot is still released into the atmosphere, just possibly as smaller particles. I know that there have been countless emmissions tests on the DPF systems, but I've never seend any data on the output during a regeneration cycle. And even if you hooked one of the 6.4's up to an emmisions tester it still would be a false reading because there are 2 spots on the exhaust that are designed to pull fresh cool air into the system before it exits the pipe. But enough of this.

I've heard of as much as 5mpg gains while empty with the DPF removed. And even better results while towing.

 

The byproducts of active and passive regeneration are Nitric Oxide and Carbon Dioxide. By 2010, the EPA requires most all Oxides of Nitrogen to be eliminated from diesel exhaust. By 2013, the remaining polutants, ie. CO2 will be addressed.

Here is a link that explains it in detail.

http://ect.jmcatalysts.com/animation-crtandscrt.htm

Select the CRT system overview for dpf. The SCRT is for 2010 emissions.

 

Huh? Are you saying that becuase of the DPF our fuel is less effeciant? Im confused - Diesel is way less refined then gas(should be alot cheaper) has around 10-20% more stored energy and in return - gets better mileage then Gasoline. Explain...

 

The ULSD fuel that you have to use on the newer trucks now is more refined and has less energy and sulphur(obviously) then previous manifestations of diesel. Compared to previous diesel fuels, the ULSD is less efficient power wise and alot of people are jumping on that additive bandwagon hoping to address that issue as well.

 

Less effeciant.. i guess? But still more effeciant then gasoline. The sulfur in diesel fuel is largely in there for lubrication purposes. By using an addiitive the main goal is to add viscosity and lubrication to the fuel. Eaiser on injectors, cylinders, etc. I guess adding cetane is a little bonus

- Theres rumors of the release of a "Premium diesel" by the oil companies - They think its an untaped market. Would you buy it?

 

So they are talking about producing a premium diesel, which has the lubrication that our $15k engines need, and obviously they will be charging more for this fuel. Even if they did it would still probably be cheaper to buy a fuel addative. A gallon of Deisel Kleen lasts me 200+ gallons,and it's only $13, and I am a firm believer in the effectiveness of it. When I use DK I regen less, get better mileage, the truck runs smoother overall especially while in regen.

 

I'm talking about people that add cetane booster, not anti-gel/lube additives w/cetane as a perk. The fuel might still be more efficient then gas, but at this point it's hard to tell because the technology that the trucks use hasn't become efficient yet, give it a couple of yrs and then maybe(of course, by then you'll probably have a different type of diesel that we have to buy).

 

Well the fuel isnt really less efficient. I currently use it in my old 7.3 an it gets the same mileage as with the old fuel. I have the same power I had with the old diesel. Gosh as for diesel fuel being a bunch higher. I dont know. I pid about .30 more then two years ago for diesel then gas an that was before the new diesel was even out. Its just a racket by the fuel companies. They can charge what they want. We have no control. Just look at President Bush he told the Saudi guys to increase production so it would lower our fuel prices. Yah right Im sure that will happen. When pigs fly.

 

"Theres rumors of the release of a "Premium diesel" by the oil companies - They think its an untaped market. Would you buy it?"


Since 1985 the only fuel we have filled our bulk tank with has been Amoco "Premier" and BP "Premier" it costs us 2 cents more per gallon and we never use additives.

Back before the days of dyeing fuel as a way to first determine sulfer content and then soley as a way of determining if taxes have been paid, these premium fuels were dyed red to tell what you were getting. In fact some premium diesel fuels were called "Ruby Red".