I just fueled up and wound up getting gas instead of deisel,I had between 1/4 and 1/2 tank of deisel before i fueled up ,i relized that it was gas after their was already 46 liters of gas pumped in,I did not start the engine and syphoned out all the fuel that i could ,i managed to get it down to less than a 1/8 th of a tank ,Now if i fuel it back up with deisel will it hurt my engine as the 1/8th af a tank that i could not syphon out was already a deisel gas mix so will it be diluted enough to run the truck , NEED INFO ASAP AS I NEED TRUCK FOR WORK TOMMOROW

well if you syphoned it out that much its probably ok, in the winter i put 2 gallons of gas in with every tank, not one troblem with filters ever, and did it on my lly for over 290000 miles

I would add a quart of 2 cycle oil to help lube the pump and injectors-- you will be OK.

I always add 2-cycle to my truck-- now have 80k. :)

I would agree with the last one through in 2 Liters of 2 Cycle and then fill er up with DIESEL.:D You should be good. 2 cycle oil is ment to be burned.

bturner their is a good article about not adding gas to diesel, I will find it if you wish but it said it was a bad idea sorry to say.

well if you syphoned it out that much its probably ok, in the winter i put 2 gallons of gas in with every tank, not one troblem with filters ever, and did it on my lly for over 290000 miles

Why would you put gas in your diesel tank in the winter? All your doing is wrecking your cp3 and injectors.

Why would you put gas in your diesel tank in the winter? All your doing is wrecking your cp3 and injectors.

he has been ok for 290000 miles, yhats 290000, i call bs on this one:eek:

X3 On The BS. That (Putting Gas In A Diesel) Is The Dumbest Thing I have Heard In A While, And Would Advise That No One Do This !

As a safety measure for anyone who accidently puts gasoline in a diesel tank, you can have upto about 10% gasoline in diesel fuel with no noticable problems.

i highly doubt that, your pump and injectors at over 20000psi fuel pressure might disagree.....:eek:

Why would you put gas in your diesel tank in the winter? All your doing is wrecking your cp3 and injectors.

X3 On The BS. That (Putting Gas In A Diesel) Is The Dumbest Thing I have Heard In A While, And Would Advise That No One Do This !

Try reading the entire post first.He didn't do it on purpose.He was looking for input on what to do about it.

Woops,my bad.I thought you were referring to the original poster. I agree,I'd never even consider putting gasoline in my diesel in any amount on purpose.

I just fueled up and wound up getting gas instead of deisel,I had between 1/4 and 1/2 tank of deisel before i fueled up ,i relized that it was gas after their was already 46 liters of gas pumped in,I did not start the engine and syphoned out all the fuel that i could ,i managed to get it down to less than a 1/8 th of a tank ,Now if i fuel it back up with deisel will it hurt my engine as the 1/8th af a tank that i could not syphon out was already a deisel gas mix so will it be diluted enough to run the truck , NEED INFO ASAP AS I NEED TRUCK FOR WORK TOMMOROW

Thats sucks. Not trying to pick on you, but your profile name fits ya!:D:eek:

A few years ago when i worked at the shell station a lady pulled up and told me there was half a tank of gas in her truck. It would have been an LB7 at the time. So she told me to just mix in more diesel to even it out. The truck was already knockin real bad so i told her to drive it across the street to the dealership before it dies. She thought i dident know anything since i was just a highschool gas jockey. Anyways longstory short she shut it off and it never started after it was filled and then got towed across the street.

As a safety measure for anyone who accidently puts gasoline in a diesel tank, you can have upto about 10% gasoline in diesel fuel with no noticable problems.

This is absolutley correct! Up to 10% gasoline will not hurt anything. I have run a 10% gas blend in various diesels in winter for over 35 years and several million miles with no engine problems and no fuel gelling to -50 degrees. I will say however, that with the introduction of ULSD that I now also add John Deere Winter Diesel Fuel Conditioner to my DMax which adds lubrication to the fuel.

This is absolutley correct! Up to 10% gasoline will not hurt anything. I have run a 10% gas blend in various diesels in winter for over 35 years and several million miles with no engine problems and no fuel gelling to -50 degrees. I will say however, that with the introduction of ULSD that I now also add John Deere Winter Diesel Fuel Conditioner to my DMax which adds lubrication to the fuel.

I had heard that a local station had been putting unleaded in their diesel for the winter time. I didn't believe him. But after reading this it might have been true.

Google is your friend!

http://www.turbodieselregister.com/mixing_gasoline_and_diesel.htm

MIXING GASOLINE AND DIESEL
(Issue 26, pages 14 – 15) My wise old mechanic who has worked on Mercedes for years told me that if I put one gallon regular gas to a diesel tankfull after about every four tanks that it would perform essentially the same job as a fuel injector cleaner at a fraction of the cost.
I would like to hear a technical opinion.
Bill Carson , e-mail
Bill, I’ll turn the answer to your request for a technical opinion over to Brian Kmetz. As a mechanical engineer, Brian’s daily task at work is to extract BTUs through oxidation from mass quantities of methane and fuel oils. Needless to say, he knows how the fuel “stuff” works. Brian writes:
We hear this one all the time. Another version is to add one gallon of gasoline to 20 gallons of diesel fuel as a cheap easy anti-gel for winter fuel. I’ll include alcohols in this discussion because a lot of guys add it instead of gasoline. Both fuels have the same detrimental effect on diesel fuel and are very close in weight and BTU content.
The mechanic meant well and probably never saw a fuel pump or injector failure due to improper blending of fuels. But that doesn’t mean one is not risking damage, even in small dosages.
Gasoline and alcohols hit diesel fuel right where it hurts the most. Those light thin fuels will lower the cetane number and lubricity. To explain how octane and cetane DO NOT work together, I’ll have to review more crude oil and fuel fundamentals.
The light distillates that gasolines are made from have a natural high-octane index. The middle distillates that diesel fuels come from have a high cetane index. The octane and cetane indexes are INVERSE scales. A fuel that has a high octane number has a low cetane number, and a high cetane fuel has a low octane number. Anything with a high octane rating will retard diesel fuel’s ability to ignite. That’s why each fuel has developed along with different types of engine designs and fuel delivery systems. Gasoline mixed in diesel fuel will inhibit combustion in a diesel engine and diesel fuel mixed in gasoline will ignite too soon in a gasoline engine.
A lot of old-time mechanics added some gasoline to diesel to supposedly clean the carbon deposits out of the cylinders. I have never read anything that said it worked. Gasoline will make the fuel burn hotter, and hotter burning fuels burn cleaner. That’s probably where the theory got started. In the older diesel engines that belched lots of black smoke even when properly tuned, the result of adding gasoline was probably more white smoke instead of black. This might lead one to believe the engine was running cleaner. Maybe so, probably not. Here’s what happens.
Gasoline will raise the combustion temperature. This might or might not reduce carbon deposits in the cylinder. This also might or might not overheat the injector nozzle enough to cause coking on the nozzle. That’s a clogged injector tip in layman’s terms. The fuel being injected is the only thing that cools the nozzle. Diesel fuel has a lower combustion temperature than gasoline. The fuel injectors depend on the fuel burning at the correct rate and temperature for a long life. If the combustion temperature is raised long enough, the gums and varnishes in gasoline will start to cook right in the fuel injector and turn into carbon. These microscopic carbon particles will abrade the nozzle. High combustion temperatures alone will shorten fuel injector life, gasoline makes the problem worse.
Gasoline and alcohols do have an anti-gel effect on diesel fuel, but these fuels are too thin and will hurt the lubricity. Alcohols work as a water dispersant in small amounts, but also attract water in large amounts. Diesel fuel is already hydrophilic (attracts water) so why add to the problem. The old timers got away with this because high sulfur diesel fuel had enough lubricity to take some thinning. Today’s low sulfur diesel fuels have adequate lubricity, but I wouldn’t put anything in the tank that would thin out the fuel, reduce lubricity, or attract water.
Opposites do not attract in this case. Use any of the diesel fuel additives available to clean out carbon deposits, not gasoline or alcohols.
While we’re on the subject of fuels, let’s discuss another common question. What is cetane?
Cetane is to diesel fuel what octane is to gasoline. It is a measure of the fuel’s ignition quality and performance. Cetane is actually a hydrocarbon chain, its real name is 1-hexadecane. It is written as C16H34, or a chain of 16 carbon atoms with 34 hydrogen atoms attached. All HC chains are also referred to as paraffins. Cetane is a hydrocarbon molecule that ignites very easily under compression, so it was assigned a rating of 100. All the hydrocarbons in diesel fuel are indexed to cetane as to how well they ignite under compression. There is very little actual cetane in diesel fuel.
All the hydrocarbons in diesel fuel have similar ignition characteristics as cetane. Cetane is abbreviated as CN. A very loose way to think about cetane is if the fuel has a CN of 45, then the fuel will ignite 45% as well as 100% cetane. Diesel engines run just fine with a CN between 45 to 50. There is no performance or emission advantage to keep raising the CN past 50. After that point the fuel’s performance hits a plateau.
Diesel at the pump can be found in two CN ranges: 40-46 for regular diesel, and 45-50 for premium. The minimum CN at the pump is supposed to be 45. The legal minimum cetane rating for #1 and #2 diesel is 40. Most diesel fuel leaves the refinery with a CN of around 42. The CN rating depends on the crude oil the fuel was refined from. It varies so much from tanker to tanker that a consistent CN rating is almost impossible. Distilling diesel is a crude process compared with making gasoline. Gasoline is more of a manufactured product with tighter standards so the octane rating is very consistent. But, the CN rating at the diesel pump can be anywhere from 42-46. That’s why there is almost never a sticker on a diesel fuel pump for CN.
Premium diesel has additives to improve CN and lubricity, detergents to clean the fuel injectors and minimize carbon deposits, water dispersant, and other additives depending on geographical and seasonal needs. More biocides added in the south in summer, more ant-gel added in the north in winter. Most retailers who sell premium diesel will have little brochures called POPs (Point of Purchase) at the counter explaining what’s in their fuel. Please don’t ask the poor clerk behind the counter any technical questions after reading this discussion. All they need to know how to do is sell you beer, milk, cigarettes, lottery tickets, and take your money.
Texaco and Amoco are two big names who sell premium diesel in limited markets. Amoco primarily sells its Premier to specialized industrial and agricultural markets. I cannot get either in my area. Most fuel retailers buy additives or buy treated fuel. In the Northern plains states, Koch is a well-known marketer of premium diesel. I buy it when I travel into Northern Wisconsin.
Because there are no legal standards for premium diesel yet, it is very hard to know if you are buying the good stuff. I have good news. An ASTM task force has drafted standards for premium diesel. When the new specifications are accepted, information will have to be posted on the fuel pump. Retailers will no longer be allowed to label cheap blended diesel as ‘premium.’ They will have separate pumps with clear labels on both informing the customer what is being sold. The marketing and labeling will be the same as with regular and premium gasoline. Retailers selling the real thing use this system now. Enforcement of all fuel standards is done at the state level in the USA.
Diesel fuel is an international commodity for industry. Therefore, you should be picky about where you fill up. Shop for price from a large volume retailer so you have the freshest fuel. That’s about the best advice I can give.
The 1994 legislation and reformulation of diesel fuel in North America is due to an international effort for lower emissions. Cleaner diesel emission laws are on the way. Diesel fuel is going to be reformulated into a cleaner fuel in general. Without getting too technical (this is over-simplified and very generalized), diesel fuel for the most part is made up of two different hydrocarbon families: paraffins and aromatics. The paraffins have a naturally high cetane index, burn clean, but cause the annoying gel problem in winter. The aromatics have a naturally high lubricity, low cetane index, and cause a lot of diesel emissions and soot. Reformulated diesel will have a higher paraffin content, higher cetane number, and a much lower aromatic and sulfur content. It will also be more prone to jelling and have a lower lubricity. Big oil is working on improved additives as I type this.
The reason nothing has happened yet is because of infighting in the EPA on its new Tier II Emissions standards for gasoline and diesel. Ultra-clean technology for gasoline and diesel engines is almost ready to go, but the refiners have to lower the sulfur level drastically in both fuels. The EPA should formally set something by year 2000.
Brian Kmetz


Very interesting read.

David

he has been ok for 290000 miles, yhats 290000, i call bs on this one:eek:



I know of a couple folks that do this. How ever i never have and never will. There alot of old timers that have diesel truck do this in case u didnt know

Why stop with gas? Just go ahead and put some sugar or sand in your fuel tank too while your at it. Both just as dumb to do on purpose. I don't get it.

thats why i don't put atf or 2 stroke oil in my tank, i would hate to have injectors go out and the dealer say, well, we found out that you ran atf or 2 stroke oil and your warranty is voided.

I run ATF all the time. Lubs the injectors. Every other fill up

i guess i am just a little paranoid but this is the first diesel i have owned and i don't want to mess with the fuel as they seem to be worse than a gas engine when it comes to getting a bad tank and the fuel filters.

I run ATF all the time. Lubs the injectors. Every other fill up


How can something that has friction moddifiers in it lube your injectors as well as you think? Just something to think about for you. Run a good additive like Stanadyne and be done with it.