ULSD has anyone noticed anything yet?

[Chris and Sam]

Ok, has anyone noticed anything different with their 1st gen trucks since the diesel formulation changed? Well, I have noticed a couple of different issues that have came up, I have lost mileage in all 3 of the trucks that I have, 93 d250, 93 W250, and 80 W200 Crew/90 W250. All 3 of the trucks are begining to seap at the throttle injection pump, and this is with all three trucks. I don't have a problem with the pump starting to go out on one of the trucks, but all 3 at the same time just isn't right, what is the same for the 3, the fuel, and this has just been within the last month or so.

Wondering if anyone else has experienced this???? :-{}

 

[Gardiner]

I was dealing with a slight seepage around the throttle shaft on my injector pump for over a year... . no big deal. Within 2 months of using the new diesel the seep turned into a major drip and the pump started to leak internally as well. The pump was on it's last legs anyway, but it seems that the new fuel accelerated the problem.

 

[DVolk]

ULSD has anyone noticed any thing yet

Any body try adding fuel conditioner ? like atf or 2 stroke oil



we dont have it in oregon yet , but im conserned with my older engines



or has anyone tried buying sulfer and mixing up a solution then adding to the tank ?



If this new fuel causes parts to screw up ,could be a cause for a major



class action law suit to the oil companys

 

[rdodd]

Why not just use the old fuel like i do. As i understand it, we don,t have to use the new fuel in our older trucks until around 2010. Both fuels are available around here in the midwest.

 

[JLEONARD]

My mileage is down too, but it might just be the winter fuel blend.

No choices here in the NE... ya gets whats in da pump. . period.

 

[HunterShawn]

i use the one shot fuel conditioner and we have the new fuel here in Idaho i havent seen a diff. in mileage yet

 

[Greenleaf]

The ASTM dictates the fuel lubricity so you most likely will not have an issue. Keep in mind the fact that our fuel pumps are loose compared to the new injectors that must still be lubricated with diesel, so read that as: they are more concerned with the life of the tighter fitting parts than our loose pumps.



WE likely will have issue with old seals but that isn't the fault of the oil compamy refining process nor ASTM.



Operate with an added lubricity agent to be safe if you feel you must. I use three/fout times the additive now and have for years. So, it will be interesting to see if the new fuel will effect MY "O" rings. Most likely my gasoline powerd truck will remain uneffected by all this.

 

[Kiohio]

I have been reading alot of these posts lately.

My question is other than the stuff we know we will have to correct, leaks and such.

How about other things?

Like EGT.

Does it seem higher? If so by How much?

Anyone with gauges been watching it closely?



Thanks, KO

 

[dpuckett]

I noticed a drop in MPGs about 2 weeks before SOP3, too early for winter fuel around here, so I think it is the new fuel. I had the seals redone a few months ago in the one pump, and have since switched pumps (erratic idle in the 114 that went to SOP), and have been watching it for leaks.



I think if you have an original, i. e. never rebuilt, you can possibly have issues with leaks, due to the old selas leaking with the new fuel. Leakage could be casued by either the cleansing effect some have reported, or if you have an old nonIC, it could be the rubber seals shrinking due to the lower aromatic content of the ULSD. Either way, a new seal kit isnt a bad idea for anyone with an older truck. The new seals are (supposedly) made of Viton, which is immune to the effects of reduced aromatics.



Daniel

 

[Greenleaf]

It's probably too simple to calculate the fact this new fuel will contain less BTU than the older fuel so the EGT will drop. Same with the fuel economy.



Jay would know. He is the engineer. Perhaps he will comment if we can get him to stop blowing that steam whistle.

 

[Grey Wolf]

No problems here and we've had ULSD here for over a year. However I've been using Stanadyne just in case

 

[Turbo Tim 1]

Any body try adding fuel conditioner ? like atf or 2 stroke oil



we dont have it in oregon yet , but im conserned with my older engines



or has anyone tried buying sulfer and mixing up a solution then adding to the tank ?



If this new fuel causes parts to screw up ,could be a cause for a major



class action law suit to the oil companys

Chances are you do have ULSD there! If you look it up it is a federal mandate not state by state except for comifornia. The sulfur reduction didn't take out the lubricity, it's the process to remove the sulfur that took out the lubricity so adding sulfur would only make you pollute more.



Even if we are eating up injection pumps at least our exhausts should last longer, since sulfur and the other things in our exhaust pipe tend to make sulfuric acid, less sulfur means less rot.

 

[DVolk]

ULSD has anyone noticed any thing yet

Sulfur doesnt make the exhaust rot ,



I have trucks and tractors to prove it , that are between 30 and 50 years old and on my 92 the tail pipe is replaced ,only because of some idot backedinto it pinching off the exaust pipe



go check your sorces again , the sulfer replaced the parafin ,way back when , maybe thats the thing to go back to is parafin , then we can kill the mosiquito population , since that crap smells like those candles that you burn when camping or on your patio

 

[rdodd]

What kind of a job is it to replace the o-rings,seals,etc to the viton type? Does the pump have to be removed?

 

[dpuckett]

rdodd- yes, pump has to be removed to replace seals and o-rings.



DVolk- I agree with you on the tailpipes. Mine are nearly like new, with a couple hundred thousand miles apiece, and only a thin coating of oxidation/ dust on them.



DP

 

[Turbo Tim 1]

Sulfur doesnt make the exhaust rot ,



go check your sorces again , the sulfer replaced the parafin ,way back when

Since I burn fossil fuels to make my living I can tell you for a fact that the sulfur in fuels absolutely will create Sulfuric Acid if the exhaust temperature is low enough to allow the moisture to drop out and will rot out your exhaust system. This is exactly why people that drive only short distances tend to need to replace exhaust systems more often.



In general all fossil fuels contain sulfur in them direct from the ground, sulfur has never been "added" to the fuels. Oils and gases from different parts of the world do contain different amounts of sulfur when they come out of the ground though. I know Pennsylvania crude oil tends to be parrafin based but it still contains sulfur. The parrafin base is why certain companies use only Penn crude to make their base stocks.



Now, do I think the Sulfur content will make a big difference in how long an exhaust last? No, around my area the salt in the winter will make up the difference, mostly I said it as a joke but there is merit to my statement and my sources are correct!

 

[Chris and Sam]

ULSD, what it is doing

From what I have read, the ULSD is made with a process of adding chlorine to remove the sulfer out of it, thus leaving a chlorine chemical agent which can eat up seals(an acid for all intensive purposes). I would like to see who, if ANYONE in the EPA did any long term tests(6 months or more) to see what effects it would have on our motors, or any OTR diesels! The members out in CA don't have a choice in the matter, and several other states also have the ULSD comming out of the nozzels too. anyhow, from the articles that I have read by doing a google or mama.com type search says that the fuel has lost some lubricity, and an additive is highly recomended, but nothing to which one is a better one to use. :-{}

 

[Moab4x4]

Our local distributor adds an additive to the bulk deliveries when they arrive to give us the lubricity of the old stuff. It may not be as slick at the refinery, but I suspect that at the pump it will be. I have a hard time seeing our podunk oil company being the only one doing this. JMO, not necessarily based on facts.

 

[DVolk]

ULSD has anyone noticed any thing yet

Try getting sevral hundred thousand on gas engine exaust , wont happen



thats the problem on here too many uniformed people on here , oh well ,its all in fun

 

[Jgolden]

Quote:

"thats the problem on here too many uniformed people on here "



I wore a uniform for a while.