Off-Road Diesel VS. Low Sulfur Highway Diesel(average diesel) - Diesel Forum - TheDieselStop.com
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Old 07-21-2011, 08:28 PM   #1 (permalink)
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Off-Road Diesel VS. Low Sulfur Highway Diesel(average diesel)

I was wondering if any of you knew the difference between off-road diesel and the regular stuff you put in. I saw that a place by my house sells the off-road kind and its about 40 cents cheaper. Thanks in advance

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Old 07-21-2011, 08:31 PM   #2 (permalink)
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You don't pay taxes on off-road diesel since fuel taxes are supposedly earmarked for the roads. Other than that it's the same stuff.
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Old 07-21-2011, 08:31 PM   #3 (permalink)
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The only difference is the red dye they put in the off road stuff...It is sold at a lower price because it is meant for vehicles that are not operated on public roads. No road taxes is the reason for the lower price.

Can you run it in your truck..Sure can..Can you afford the fine if your caught?....Only you can decide.
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Old 07-21-2011, 08:39 PM   #4 (permalink)
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Does the dye stay in the fuel like if you go from 1/8 of a tank to a full tank with regular diesel.

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Old 07-21-2011, 08:43 PM   #5 (permalink)
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Does the dye stay in the fuel like if you go from 1/8 of a tank to a full tank with regular diesel.

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I have never put the red stuff in so I can't say for sure, but it stands to reason that the dye will be diluted with the new undyed fuel. How many tanks of regular to make the dye not show up on the lawmans stick .I dunno
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Old 07-21-2011, 08:46 PM   #6 (permalink)
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I may be a little illiterate....what's a lawmans stick?? Haha

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Old 07-21-2011, 08:50 PM   #7 (permalink)
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I may be a little illiterate....what's a lawmans stick?? Haha

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The piece of equipment that has some sort of absorbent material on the end, they shove it into your fuel tank through the fill hole and if it comes up red..YOU WIN!!!!! ( read lose.)

They call it dipping your tank. I have yet to see it or have it done to me. I think it is more common in farming areas of the country.
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Old 07-21-2011, 08:52 PM   #8 (permalink)
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Same here. Never heard of this happening and not sure if it is a common appearance.

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Old 07-21-2011, 09:30 PM   #9 (permalink)
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I had tried thia once....i know its frowned upon. Any way i had put the offroad fuel in from a construction company that was moving and gettin rid of thier tank and my friend had the "dip stick"......it took about 4 tanks of on road diesel to get rid of the red traces in the fuel. Of course this was purely for testing purposes and wouldnt condone anyone doing this...........but those are my findings for whoever wants to know
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Old 07-21-2011, 09:31 PM   #10 (permalink)
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Thanks for the info. I may have to try the test on some other diesel equip. First.

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Old 07-21-2011, 09:32 PM   #11 (permalink)
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Ps....it turns your fuel filters red also.
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Old 07-22-2011, 10:51 AM   #12 (permalink)
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One of the advantages of the un-taxed fuel in some instances is it still has the much higher sulpher content than the fuel for on road use. That sulpher has the beneficial side effect of greater lubrication to the fuel system components, benefiting the injectors and o-rings. However, in some parts of the country even the un-taxed/off-road fuel is now the ULSD.

I've heard reports of D.O.T. stopping all of the trucks on their way into the cattle auction and dipping the tanks; some guys had fines to pay.

A guy that I works with, so yes, this is a second hand story, told me that his uncle was getting on the interstate and based on the exhaust when he accelerated on the on-ramp an off-duty D.O.T. officer not even in his local patrol area had enough suspicion to call F.H.P. to have him pulled over. They made him pull his fuel filter in his 7.3. When it came out red, a fine was issued.

I have no idea how the color or smell of the exhaust could indicate dyed vs. non-dyed fuel, but he was caught and got a BIG fine.

Also, I know of several who run used transmission fluid as fuel in their on road diesels. The argument goes that so long as it's a "supplement" it does not need road taxes paid on it. Various arguments as to at what percentage it's no longer a "supplement." 5%? 50%? Anyway, I wonder if the onus would be on the operator to prove the red coloration is from ATF in the fuel rather than dye?
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Old 07-22-2011, 12:51 PM   #13 (permalink)
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One of the advantages of the un-taxed fuel in some instances is it still has the much higher sulpher content than the fuel for on road use. That sulpher has the beneficial side effect of greater lubrication to the fuel system components, benefiting the injectors and o-rings. However, in some parts of the country even the un-taxed/off-road fuel is now the ULSD.?
That is an extremely rare case. So rare, in fact, I doubt anybody in the public could stumble upon some. While still legal to manufacture for some very specific areas and industries the refiners are just not producing it. They've already installed the processes to remove the sulphur and it is too costly to segregate it from all the other products. Not to mention segregating it in the pipelines would be a nightmare. It will be illegal for all people in all industries w/in the next year anyway.
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Old 07-22-2011, 05:44 PM   #14 (permalink)
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That is an extremely rare case. So rare, in fact, I doubt anybody in the public could stumble upon some. While still legal to manufacture for some very specific areas and industries the refiners are just not producing it. They've already installed the processes to remove the sulphur and it is too costly to segregate it from all the other products. Not to mention segregating it in the pipelines would be a nightmare. It will be illegal for all people in all industries w/in the next year anyway.

I based my statement in part on old information and in part on the sticker on the Off Road pump. I just took a picture of that sticker and it says "may contain up 500 ppm sulphur." The sticker appears to be old, so it may very well be ULSD that is actually coming out of the pump despite what the sticker says. Once you reminded me, I remembered the mandate that even Off Road/Ag Fuel be ULSD soon, although I don't remember the actual deadline. I'm sure China is just as concerned about the environment, but I digress...

I just found this: "Non-road diesel fuel was required to move to 500 ppm sulfur in 2007, and further to ULSD in 2010." which is from http://en.wikipedia.org/wiki/Ultra-low-sulfur_diesel so therefore, as dieselmac pointed out, Off Road fuel no longer has any lubricity benefits over taxed fuel. Mea Culpa.
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Last edited by firemediceric; 07-22-2011 at 06:46 PM. Reason: Added Wiki info
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Old 07-22-2011, 09:19 PM   #15 (permalink)
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off road diesel

There is a big difference in the fuel, but as someone else said, the refineries put in the ULSD units and most red fuel is USLD dyes, and real off road is hard to get. ORLM (off road locomotive and marine) is the official name, it is up to 500 ppm of sulphur and ULSD ( ultra low sulfur diesel) is 15 ppm or less. Not only does the sulfur lube everything nicely, it makes bunches of BTU ( read horsepower and mileage), that is why the railroads and towboats got to keep it!

Yes, stops are very painful, they drop a clear tube down the tank and if comes up red, you're busted. And, if you are a business, or incorporated they can check your fuel records for 2 yrs back!

However, if your the guy driving your truck for personal use, well....its your money. Yes, the dye does take a long time to go away... One gallon of dye does 425,000 gallons of fuel......but that power and price sure is tempting!
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