All Diesel fuels created equal??? - PeachParts Mercedes-Benz Forum

Carson357 · #1 10-25-2008, 01:36 AM

i have personally seen better quality grades of gasoline when you compare the cheap gas to say Chevron, i am certain it is all in the additives. but i do not have much ecperience when it comes to Diesel fuels.

is Diesel from Chevron any better than Diesel from Arco or other discount fuel vendors? i ask this because Diesel is dropping here pretty fast, some are at $3.09 and others at $3.39

compress ignite · #2 10-25-2008, 02:48 AM

There's no better judge of fuel quality than having it tested (Horrendous Cost).
The Majors (And the small "Jobbers") will not/do not address the issue:
1.USLD as dispensed in CONUS is not/does not meet "Backwards Compatibility"
Lubricity requirements under Federal Statute.
["They" don't want you to even think about that!]
2.No one has any idea of Quality Standards of Domestic Diesel.
["Go Away,y'all can't be bothering us with that kind of foolishness"]
3.Cetane in Domestic Diesel is a joke, less than 40 usually...Some European
Diesels approach 60! [Again ,It's a cost factor to the Refiners,"Go Away"]

Find a "Fast moving"(Frequent Turnover) pump [I.E. Truck Stops are the best]
DO NOT PURCHASE FUEL UNTIL 24 HRS HAVE ELAPSED SINCE LAST DELIVERY
BY THE "TANKER" TO THE DIESEL RETAILER!!!
(ALL the crap on the bottom of the underground tank gets stirred up into the
fuel!!!)
Judicious use of: Redline Diesel Fuel Catylst(Cetane + Lubricity),
Startron Enzyme Diesel Fuel Treatment(Anti-fungal), and one Quart per tank
of Synthetic TC W 2 Cycle oil as a Lubricity Restorer.
'Will stave off most of the ill effects of the Crapola from US Diesel Pumps.

#3 10-25-2008, 04:59 AM

There is zero problem with sulfur content. Sulfur is NOT a lubricant! The process of removing the sulfur is what lowers lubricity.

There is also no problem with lubricity, the fuel must meet lubrication specs before it leaves the refinery. On top of that, the station adds its own set of additives that further increases lubrication.

All stations get their fuel from the same refineries, the only difference in a region is the additives each brand station uses.

freesoul · #4 10-25-2008, 08:47 AM

or you could just add biodiesel

LUVMBDiesels · #5 10-25-2008, 10:28 AM

Quote:

Originally Posted by freesoul

or you could just add biodiesel

I have found a 1/2 gallon of B100 added to a tank of dinodiesel works wonders... It is also cheaper than the Standyne products.

compress ignite · #6 10-25-2008, 08:18 PM

"Sulfur, Smulfer"

All I's saying is Dat De Peoples Dat suppose add Lubricity additives...ARE NOT !
You cannot "Catch" them not adding the additives...AND they SAVE FORTUNES!

'Just as they save FORTUNES by producing substandard Cetane level Diesels!

(And your Diesel automobile PAYS [IN Two Ways:1. At the PUMP. 2. With
shortened lifespan.] for their FORTUNES!)

Yea! Biodiesel will "FIX" the Lubricity issue, inexpensively.
(Only,No BioDiesel available in the Coastal Wastelands)

Skippy · #7 10-25-2008, 08:21 PM

Run B20, be happy.

Carson357 · #8 10-25-2008, 09:06 PM

i think you all are missing the point of my question, barring any contamination variables low fuel tanks etc...
is cheap diesel any better or worse than the more expensive diesel fuels?
not asking about bio diesel or sulfer content

babymog · #9 10-25-2008, 09:56 PM

I say yes, but without any data.

I buy my fuels from high-volume stations for the fast turnover, and prefer the bigger names.

Yes they all come from the same dinosaurs, but the additives are important and specified by the brands. Additives are expensive.

#10 10-25-2008, 10:37 PM

Quote:

Originally Posted by compress ignite

You cannot "Catch" them not adding the additives

Thats because its mixed in at the same time the fuel is pumped into the tanker at the refinery.

tyl604 · #11 10-25-2008, 10:47 PM

Guys, I have 255K on an 81 300SD that I have had since 1984. I have always purchased the cheapest diesel I could find, have never used Redline, never added cetane booster, have never had a fungus problem. I have always gotten around 20mpg overall and maybe 24-25 on the expressway. I finally got the valves adjusted about six months ago at 250K miles (first time since 1984) and all it did was make it easier to start. About three months ago I started using an additive to make it smoke less; I think maybe it works some but I do not have too much smoke anyway without it.

Would be hard pressed to believe there is any difference in diesel fuels whatever the source; just have not seen any difference. However this is just a personal view with absolutely no science behind it.

Cr from Texas · #12 10-26-2008, 02:20 AM

Quote:

Originally Posted by compress ignite

The Majors (And the small "Jobbers") will not/do not address the issue:
1.USLD as dispensed in CONUS is not/does not meet "Backwards Compatibility"
Lubricity requirements under Federal Statute.

Judicious use of: Redline Diesel Fuel Catylst(Cetane + Lubricity),
Startron Enzyme Diesel Fuel Treatment(Anti-fungal), and one Quart per tank
of Synthetic TC W 2 Cycle oil as a Lubricity Restorer.
'Will stave off most of the ill effects of the Crapola from US Diesel Pumps.

Why do you recommend two additives for lubricity?
It seems to me that I have to replace my injector return lines more often with ULSD. Limited observation but I suspect something in the process has increased the rate of damage to the rubber hoses. Maybe reduced aromatics?

Hatterasguy · #13 10-26-2008, 10:27 AM

With diesel I have never noticed a difference, volume is more important than anything. I always fill up at high volume truck or rest stops, no sleepy back road gas stations with ancient diesel pumps. Usually either Mobil or Citgo.

With gas I never noticed a difference either, I think its a placibo affect. People think Mobil or Shell is better than say Stop & Shop. But modern cars will run on any 87 piss you feed them. Unless you have high compression and really need that 93 to be 93 I think its all in peoples heads.

With both diesel and gas I buy whatever is cheapist, they all come down the same pipe.

Abadjay · #14 10-26-2008, 10:43 AM

Could it be that Diesel prices will start to go up after the next president takes office?

barry123400 · #15 10-26-2008, 11:50 AM

There is a difference in fuel milage between some brands. The price of diesel is almost fixed from all the normal outlets in this region of Canada.

Word of mouth amoung people that have owned older diesel volkswagons is useful sometimes. For those of you in the northern eastern states area. Try some Iirving diesel fuel. It always gave me better fuel economy than others. Buy from a high diesel volume outlet though. This applies to all diesel fuels.

Irvings refinery is located about 60 miles from the American border. So there is a chance that they supply their northeastern outlets from there. Otherwise it's fuel as usual.

The service station company I dislike the most for customer relations and having the most troublesome gas product. Has the best diesel for milage by a noticable difference. Some product seems really poor in comparison. I do not think what you pay for the product makes much difference. That is more a marketing thing. Also I imagine different brands of diesel engines respond differently to fuel quality. Irvings refined diesel fuel is the best up here anyways from my perspective.