Opps lost that one too. Empty the Ford got 20% better, loaded it was a virtual tie with the Ford winning with .1mpg better.

 

Ive read about that tmyers. The cost of the new emissions strategy. They will have longer engine life, no egr, but at a cost to fuel mileage. Im curious to see if they have a fix for the fuel mileage. The 600 cummins is considerably poorer than the 555 was. So the question is. Do you want to pay a dollar more per fillup to have cleaner oil.

 

Yes yes... old news... I think everyone already knew the PSD/TS beats the Cummins/Manual badly in acceleration tests. Out of curiosity did they compare autos? I'm anxious to see a 5-speed auto Cummins to PSD/TS comparison as it is inevitable. I'm sure the Ford will still win but I would like to see it no matter what the outcome.

 

PSD has the advantage again. It holds 15 quarts of oil and the Cummins* holds 11. More oil = lower concentration of contaminants.

*based on the Cummins information available on their website for the 2003 engine that has not been updated.

 

Yeah but the PSD will dump up to 80% more soot in the oil. Does it have 80% more oil? If you look at the oil change intervals for both. Its obviously a problem for the PSD. Dillution is not the solution to pollution.

You must forgive me for not thinking more expensive more frequent oil changes are a plus.

 

How do you figure 80%? That number seems to be pulled out of thin air. The EGR is actually turned off at WOT so under load, when you are putting more soot into the oil than any other time, no exhaust is going back into the engine. I also know of quite a few people that have disabled EGR.

 

BTW... All of the specs tmyers is talking about are posted on this site. Just look on the homepage under "Ford introduces the 2005 Superduty" in case somebody didn't see it. I noticed the GCWR is now 23,500 lbs.

 

Ya know regardless of how this turned out in the end it still comes down to the truck you like. But one thing almost everyone agree's with is give me more power. The problem is we loose mpg.

The PSD/TS is used in the F550 and rated at 33000lbs. What this means to me is that this combination is over kill in a light duty truck, not that I'm complaining. But how much more could we reduce engine size and still handle the loads we pull.

 

Thats how much more soot they had to design the oil to carry. If you want to read more on the subject. Try the oil company websites and caterpillar. They will explain it in detail much better than I could. EGR IS BAD. Thats why cat went to accert. I did not procure the number out of the air. You may notice that I dont make stuff up. I will only post what I read or that I can logically derive on my own. 80% is a sound number. Notice I said up to 80%. There are cleaner engines and there are dirtier engines. Also circumstances where the engine will not be that dirty. Like mostly highway miles. A city truck will have dirtier oil.

You are corect egrs are only operating at low engine speeds. The problem with diesel emissions stems from them running super lean at idle. As lean as 100 to 1. Too much air in the cylinder leads to the production of oxides of nitrogen. The epa doesnt like oxides of nitrogen. They believe it causes smog. So they want it eliminated. EGR is a solution that works. It causes accelerated engine wear and burns more fuel. They have argued that it causes less pollution to burn less fuel but put out more harmful emissions. EPA does not agree. Not too mention the longer engine life makes less pollution due to the fact that you dont need to manufacture as many. Less manufacturing less pollution.

 

You would do better to get a bigger engine at that weight. Itll pull it. You wont like it. A dt530 would be a great choice at that weight for everyday driving. The engine in that truck will not be 325hp like the PSD. It will only be 230. You need the 530 to get 280-330hp. Note that a 330 hp 530 will tow much better than the cummins or the PSD because of how much force it makes. Hp isnt necessary to tow well. 220hp will tow well up to 25k if you have over 600lb ft of torque. But a 325 hp PSD will be much faster.

Hp is how fast you tow. Torque is how well you tow. Case in point. A 190 hp diesel 7.3 will tow much better than a 190hp 4.9. I can tell you from personal experience the diesel tows MUCH MUCH better. Does the diesel have more power under the curve?

 

You missed the point. For the loads we pull we don't need the power we have on tap with these engines. Most people will not even get close to max except the 5th wheel crowd. And even then I bet most of them have no problem pulling at or near the speed limit in all but the steepest mountain passes.

How much power can we afford to loose to get better fuel mileage and still maintain overall towing capability. All this reaching for higher and higher HP/Torque in the end is fun but at the end of the day our wallets are getting lighter.

 

DUDE. Ive been trying to explain that to people. Not related to this thread.

A 190 hp diesel does almost everything I need it to. Id be happier around 225. A 325hp diesel actually sounds a bit absurd to me. WTF is the point. Do you need to tow that 4 million lb fifth wheel on the interstate at 100mph. I think the lower hp diesels help keep some of us off the darwin awards websites. Give any man too much rope and he will hang himself with it.

BTW. Not that it means its better but the cummins is rated up to 56k lb applications. I wouldnt want to drive it but its there. Can you imagine trying to get on the highway. I aint talking about the 325hp cummins either. The 230hp ones.

 

Hilarity John... Hilarity. I didn't quite understand the top one I quoted here though. Why is the PSD already parked? Is it because the Ford was doing 90 when it hit the parking spot while the Dodge was only doing 60 and still accelerating. No that couldn't be it because that means the Ford would have accelerated faster. Okay it must mean the Ford driver has alot more intelligence(well he bought the Ford for one) and driving competence so he was able to find the parking spot first.

As for the people being more careful not to door a Ford. Well I always told my dad if you're getting a work truck buy a Ford because if one of us ends up denting it I won't notice or mind as much. Well he bought a Chevrolet Silverado gasser which at first made me happy but then he dented it sad.

 

Of course you can call me stupid along with the rest of the world. I building a 502 with 550hp and 630lbs. Not that I need it but its always nice to be able to move a house or fly through the mud. And I will be buying a an 05/06 F350 PSD Dulley. I'm even considering finding a wrecked PSD and putting it into my 56. I wonder how many 56 dulley panel trucks are out there.

 

Well of course that's because the PSD got there sooner!