Diesel Fuel... Are You Getting What You Paid For or Buying a Problem?

Diesel engine designs striving to increase engine performance have made great advancements in engine fuel delivery to the combustion chamber. Today’s diesel engine is quieter, smoother, and more powerful. But today’s diesel engine owners are overlooking one important factor. The quality of today’s diesel fuel has not advanced at the same rate as the engine improvements. Diesel fuel begins to deteriorate as soon as it is produced. Within 30 days of refining, all diesel fuel regardless of brand, goes through a natural process called re-polymerization and oxidation. This process forms varnishes and insoluble gums in the fuel by causing the molecules of the fuel to lengthen and bond together. These components now drop to the bottom of the fuel tank and form asphaltene also known as diesel sludge. The fuel begins to turn dark in color, smell bad, and in most cases causes engines to smoke. The engines smoke because some of these clusters in the early stages are small enough in size to pass through the engine filtration and into the combustion chamber. As these clusters increase in size, only part of the molecule gets burned. The rest goes out the exhaust as unburned fuel and smoke. With increases in cluster size they begin to reduce the flow of fuel by clogging filters. The filters only address the symptom and not the cause. It is estimated that eight out of every ten diesel engine failures have been directly related to poor quality and contaminated fuel. The build-up of contaminates in the fuel systems and storage tanks can quickly clog filters, thus resulting in engine shut down, fuel pump wear, and diesel engine damage.

Understand that most fuel has some amount of water in it from either condensation or vents. This threat requires that we realize the added burden placed upon diesel fuel as opposed to gasoline. Gasoline acts as a fuel only. Diesel fuel, on the other hand, also must cool and lubricate injection system parts. These parts are engineered to very close tolerances - up to 0.0002 of an inch - and any contamination means rapid part wear. Water displaces the diesel fuel. When the fuel is displaced wear occur because lubrication is now absent. Water that enters the combustion chamber results in even more serious damage. When it comes in contact with the heat of the combustion chamber (in excess of 2000 degrees F), it immediately turns to steam and often explodes the tip of the injector. Water causes corrosion of tanks, lines, injectors, and greatly reduces combustibility. Other areas of concern include the producing more exhaust emissions and effecting EPA standards.

Bacteria also present a serious problem. Bacteria feed on nitrogen, sulfur, and iron that may be present in the fuel or tank. Then there are algae. There are absolutely no algae in diesel fuel. You may have fungus and microbial contamination but no algae. This is a misnomer for diesel sludge. So if you have a diagnosis of ALGAE and add a biocide, you have done two things, 1) found a mechanic that is wrong and 2) done nothing to fix the problem. Why is there so much bad fuel? The number one reason is due to the increased popularity of diesel power and the accompanying increased demand for more diesel fuel. There was a time when diesel fuel remained in the refinery storage tanks long enough to naturally separate and settle, allowing the clean fuel to be drawn off. Now with increased demand, diesel fuel never remains stationary long enough for settling, and the suspended water and solids are passed on to you, the user. The change in refinery techniques is another problem. In order to get more products per dollar; diesel fuel is now being refined from more marginal portions of the crude oil barrel. This results in a lower-grade product that is inherently thicker and contains more contamination.

Thirdly, current fuel distribution methods also have a negative impact on the condition of the fuel at the time of delivery. In many cases, brokers control fuel sales to major distribution terminals and determine delivery dates. There is no telling how long that fuel has been in the distribution network and how many times it has been transferred. Seldom do these distributors filter the fuel as they transfer it. The solution: Multifunctional diesel additive packages and hardware. For your single vehicle or fleet the improvement of fuel quality by the use of additives and current technology is always a good choice. Many diesel fuel additive packages address the key issues with respect to fuel performance; some improve fuel economy, increase lubricity, improving cold flow, and improve cetane number. And some only address the issue of rust and corrosion, but all should be considered. Most diesel fuel additives contain combustion improvers that release oxygen during the compression stroke. This allows combustion to start sooner, providing for a more complete fuel burn. A more complete burn provides all the power your fuel and engine is capable of producing. As combustion improver and you get a smoother running engine, an increase in horsepower that improves fuel economy and the reduction in black smoke emissions.
 Cetane is a performance rating of a diesel fuel, a higher cetane number or cetane rating indicates greater fuel efficiency. The fuel’s cetane influences, duration of white smoking after start-up, drivability before warm-up, and intensity of diesel knock at idle. Increase the cetane number of a fuel and you have improved performance. In diesel fuel systems, the fuel provides lubrication for the fuel pump and injectors. A fuel with poor lubricity can cause excessive wear and premature failure of these components. Improve lubricity and extend engine life. Diesel fuels have pour points (the lowest temperature at which an oil or other liquid will pour under given conditions) within the range of normal winter temperatures. As a fuel approaches its pour point, paraffin in the fuel form wax crystals that prevent it from flowing. Flow-improver additives modify the wax crystals, lowering the pour point of the fuel and give better cold weather performance. For on-sight storage tanks other issues must be looked at.

On-sight storage tanks always have a small amount of the first gallon of fuel ever put in them, unless it is drained 100% and cleaned. So adding new, fresh fuel always has a bit of the bad added to it every time fuel is purchased. Diluting the bad with good over time is a loosing battle. The fuel will always be bad fuel until the core problem is addressed The order of treatment for fuel related problems should always begin with a determination of whether there is water in the fuel and if the fuel has microbes (fuel bugs) in it. Water Paste and Fuel Test Kits can be used for this stage of maintenance. If microbes are detected, then the use of biocides is needed. Biocides have no effect on and will not eliminate the sludge problem. Biocides kill bacteria, that’s all! The water issue should always be remedied first by the use of fuel water separators on the tank or on the equipment.

Next a multifunctional chemical additive should be added to improve fuel performance and then if needed a problem specific additive to dissolve diesel sludge and or a rust inhibitor to protect steel tanks. For long-term prevention, the use of magnet fuel conditioners is recommended. These devices continually reverse the re-polymerization of the fuel during circulation and reduce the need for ongoing additive use. There is no good time to find out that your engine won't operate or that half its life span is gone prematurely because of contaminated or poor quality diesel fuel. Since no one can predict a breakdown, the only safe method is prevention. Realize now that you do have a problem, and manage it now, or deal with the unexpected catastrophe and reduced equipment life that comes at the absolutely wrong time and is not in the budget! 

What Is E85 Ethanol And How Is It Made?

With gasoline prices rising higher and higher, with no relief in sight, consumers are becoming more aware of and more interested in alternative fuel sources. One of those viable fuel sources is E85 ethanol. These days, there is quite a bit of talk about this fuel, and why shouldn’t there be? After all, it costs close to thirty five percent less than gasoline and is quickly becoming a preferred choice for motorists at the pump stations. E85 ethanol is already widely used in Brazil with about 90 percent of Brazil’s vehicles able to use E85 ethanol. Although a much lower percentage of vehicles in the United State’s are flexible fuel vehicles, and therefore able to burn E85 ethanol, it is quickly gainer favor.

What is E 85 Ethanol?
When 15 percent of leaded gasoline is combined with eighty five percent of ethanol, the result is the low-cost E85 ethanol fuel. It is an alcohol-based fuel that can be produced from employing the use of two methods. The first source of production involves the fermenting and distilling of starch-like feedstock. They include corn, barley, and wheat. The next method, which is referred as bio-ethanol, involves extraction from trees and grasses.

Although the price of the Ethanol E85 may be foremost on consumer’s minds, it also gets the nod from earth activists because it is an environmentally friendly product. It burns clean and its key ingredient source is renewable. Ethanol E85 also lessens the need for imported crude oil because it is locally produced, and is also known for increasing the octane rating in fuel while decreasing the harmful emissions caused by gasoline. If you are consciously trying to use less gasoline because you are aware of toxins it releases into our air think about this: if you convert to a flexible fuel vehicle and you burn E85 in that vehicle you will automatically be using 85 percent less gasoline that you previously had because 85 percent of your fuel is now ethanol and only 15 percent is gasoline.

Ethanol E85 will run well in flexible fuel vehicles like those manufactured by Daimler Chrysler, Ford, General Motors, Isuzu and Nissan to name a few. But, if you don’t own a vehicle by one of the above-mentioned manufacturers, you need not fear. Some people are not aware that many other cars manufactured today are Ethanol E85 compatible. It is best to find out from your car dealer if you have a flexible fuel vehicle.

How is E85 Ethanol Made?
The method for producing Ethanol E85 is long and complex. The maker has to first extract sugar from biological feedstock in order to begin the process. Corn is the leading ingredient in Ethanol E85 gas in the United States. In Brazil, sugar cane is the leading ingredient in ethanol. The starch in these crops can easily be converted into sugar. Sugar for this fuel can also be extracted from cellulose, which is a sugar based ingredient found in trees and grasses.

Once the feedstock is collected, it goes through a grinding process to extract the sugar. Sugar fed into microbes quickly produces ethanol and carbon dioxide, which is purified to get the ethanol to the right consistency.

There is another method of manufacturing Ethanol E85 oil or grain alcohol, as it is also known, and this is through a wet-milling process. This is also the method that large-scale manufacturers use when producing high-fructose corn sweetener.

Ethanol E85 is an innovative and renewable resource with many positive characteristics, making it one of the leading topics of discussion for those looking to help the earth and looking to keep a few extra bucks in their wallet. Although E85 is currently only available at approximately 600 pumps in the United States, that number is expected to grow significantly in the next few years.


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