Competition Ultra Low Sulfer Diesel (preformance talk)

[RyanB]

Well, with all the talk now on the other pages of the TDR about how preformance and fuel economy is lacking with the new ULSD fuel I am just curious about what you all think this comming season is going to be like racing and pulling with this new mix of Diesel Fuel???



My truck has yet to have an ounce of ULSD fuel go thru its system, actually I have yet to even see the ULSD stickers on the pumps up here in Ontario. But I am really curious what its going to do preformance wise for us and also mechanically.



I for one worried all last year about all the story's of guys sticking plungers and barrels in there P-pumps and although I did run extra lube with the fuel it just makes me wonder what everyone is going to have to do this year.



I have heard talk about colored fuel being the good old stuff still and that it will likley not change because of its agricultural background. Are alot of guys going to going that route. My truck will still be semi-street driven so..... :--)



So what do you guys think is going to happen this year?



RyanB

 

[jwilliams3]

Most people use additives that compete.

I always do.

 

[GMac]

i just got some of that crap this week and I noticed my egt's were about 150 degrees higher than with the old fuel. I put stanadyne in my tank on the same tank of fuel and it lower my egt's 100 degrees. Maybe it is a fluke thing but I don't think so

 

[Forrest Nearing]

I haven't noticed any performance difference either way, but the fuel I get in TX seriously smells like a jug of Power Service, so they've gotta be putting additive in it

 

[John_P]

Ryan:



I can tell you that I am concerned about the ULSD especially in my 96' 12 valve with that P-Pump for the reasons you stated in your first post!



Here in eastern N. C. , the ULSD is everywhere! The new stickers are on all the diesel fuel stations that I go to. As a result of that, I am using not only the new "Stanadyne ULSD Performance Formula" Additive but also a little extra cetane with "Stanadyne Lubricity Formula" just for good measure! Maybe it is "overkill" but IMO it is cheaper than having to replace or rebuild my P-Pump. I have seen the ULSD since the first part of October and so far, so good for me. I intend to keep doing what I am doing.



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John_P

 

[Luke Warmwater]

i just got some of that crap this week and I noticed my egt's were about 150 degrees higher than with the old fuel. I put stanadyne in my tank on the same tank of fuel and it lower my egt's 100 degrees. Maybe it is a fluke thing but I don't think so

Let us ponder those results... EGTs higher with ULSD? I'm not being sarcastic but what possibly would cause that? Somehow ULSD has either reduced the ability of your engine to injest oxygen or it has somehow managed to trick your fuel system to pump more fuel? Even more perplexing is the assertion that an additive reduced EGTs by 100 degrees. I'm open to any theories as to what would cause either condition. I have not been on the dyno lately but my guess is that HP may be down ~1% or so given the reduction in BTUs of ULSD by you guessed it... ~1%. Apply a small amount of logic and science to assertions about ULSD and then educate the rest of us lol.



Why would one add a cetane boost when ULSD has a higher cetane rating than the old LSD? Additive manufacture marketing types must be licking their chops...

 

[NoSeeUm]

Let us ponder those results... EGTs higher with ULSD? I'm not being sarcastic but what possibly would cause that? Somehow ULSD has either reduced the ability of your engine to injest oxygen or it has somehow managed to trick your fuel system to pump more fuel? Even more perplexing is the assertion that an additive reduced EGTs by 100 degrees. I'm open to any theories as to what would cause either condition. I have not been on the dyno lately but my guess is that HP may be down ~1% or so given the reduction in BTUs of ULSD by you guessed it... ~1%. Apply a small amount of logic and science to assertions about ULSD and then educate the rest of us lol.



Why would one add a cetane boost when ULSD has a higher cetane rating than the old LSD? Additive manufacture marketing types must be licking their chops...

I am guessing only, to make the same power more fuel has to be burned hence more heat.



Jim

 

[Forrest Nearing]

I am guessing only, to make the same power more fuel has to be burned hence more heat.



Jim

but how does your fuel system magicly pump more fuel?

 

[Luke Warmwater]

Guess less... study more

 

[KingS]

Easy it take more of the skinny pedal to run the same speed down the road.



Which would make cense on why alot of people have lost fuel mileage like my self, I have lost 3 mpg with the new fuel This is with my dad's truck which is mostly stock 97.

 

[Forrest Nearing]

Easy it take more of the skinny pedal to run the same speed down the road.



Which would make cense on why alot of people have lost fuel mileage like my self, I have lost 3 mpg with the new fuel This is with my dad's truck which is mostly stock 97.

what about WOT? by this logic, EGT's should be reduced at WOT

 

[GMac]

i am not guessing or making obscene observations. I did this all in one day of driving. same ambient temp, same conditions and even drove on the same road. My egt guage doesn't lie. If ULSD burns with more cetane, which would equal more heat. I get that. Maybe the stanadyne lubes and or conditions the fuel differently. I am not a chemist so I don't know.

 

[KingS]

yeah but WOT will eat alot of fuel.

 

[2broke2smoke]

wifes '06 just got it's best mileage ever (20. 0 hand calc) ... been running ulsd for a while



does that mean the ulsd is responsible?





nope ... she got a notice from her company that she has 5 points off her drivers license, one more point off will get her a written reprimand ...



so she drove the speed limit for the last tank ...



carefull blaming the fuel ...



haven't notice any diff in my '01 except for the smell on a cold morning ... smells more like kerosene



could you guys be getting winterized fuel?

 

[NoSeeUm]

but how does your fuel system magicly pump more fuel?

LOL



I take it you didn't like my guess. How about for the same amount of fuel and air it burns hotter?



Jim

 

[John_P]

_________________________________________________________________Quote by Luke Warmwater:



"Why would one add a cetane boost when ULSD has a higher cetane rating than the old LSD? Additive marketing hypes must be licking their chops... "

_________________________________________________________________



FWIW,... ... the Department of Agriculture in our State did some early random testing on this "new ULSD fuel" and found that in some cases the cetane rating was not even getting to 40!! Also, Stanadyne gave some pretty good information out at the Scheid Diesel Rally back in August of 2006 on how much trouble the City of San Antonio, Texas was having with their cities diesel maintenance trucks since they began using the ULSD fuel.



Like I said above, I am going to use some additive and cetane. Especially in my 1996 Dodge CTD with that P-Pump. IMO,..... it's cheap insurance.



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John_P