AMSOIL Diesel Fuel Additives

Diesel Fuel Concentrate
Cold Flow Improver
Cetane Boost Fuel Additive
New Diesel Recovery Emergency Filter Thaw

(printable product data sheets PDF's to download)
Diesel Fuel Additive Concentrate
Cetane Booster & Cold Flow Improver (2-pages)
NEW 10/15/2008 Diesel Concentrate with cold flow improver (mix)
See Q&A section below.

Buy all or any of these items in the Store Fuel Additive section.

NEW - This product saves you more in diesel fuel costs than the product actually cost in the case and will protect your injector system. Completely prevents problems caused by ULSD fuel. Call to order. Tested over more than 12 million miles with a average increase of 5% MPG in 2006 diesel vehicles.

Product Description
AMSOIL Diesel Concentrate (ADF) provides maximum diesel operating efficiency. It compensates for the variances in quality of different fuels (including biodiesel) and the deficiencies of today’s Ultra Low Sulfur Diesel fuel (ULSD) for better engine operation. New engine technology, tighter tolerances and emission regulations require high-quality diesel fuel for long-term engine operability. AMSOIL Diesel Concentrate meets the low sulfur mandate. It improves diesel fuel quality to exceed today’s stringent performance requirements. AMSOIL Diesel Concentrate extends equipment life, lowers operating costs and improves diesel performance.

Improves Fuel Economy and Restores Horsepower
As diesel engines are used, they become less efficient over time. Fuel injector deposits interrupt spray patterns, causing poor fuel atomization, incomplete combustion, excessive emissions and smoke. Tests prove that AMSOIL Diesel Concentrate cleans dirty injectors, improving fuel economy by up to five percent and restoring horsepower to like new. Acceleration is improved and with regular use, AMSOIL Diesel Concentrate continues to enhance performance by keeping injectors clean. The net savings on fuel expense can result in no additional cost to vehicle operation.

Lubricates Fuel Pump and Injectors
Ultra low sulfur diesel fuel has significantly reduced lubricity – a critical property in controlling wear in fuel pumps and injectors. AMSOIL Diesel Concentrate adds back all the lubricity properties needed and more. Fuel pump and injector service life is extended, saving time and money on maintenance costs.

Reduces Cylinder Wear, Retains Engine Oil TBN Longer
With high rates of exhaust gas recirculation (EGR) in modern diesel engines, acids from combustion are of particular concern. AMSOIL Diesel Concentrate neutralizes acids during combustion. It helps reduce acid caused cylinder wear and helps extend engine oil TBN, maintaining engine oil quality longer for better protection.

Minimizes Soot Loading
AMSOIL Diesel Concentrate is a powerful cleaner that cleans fuel injectors and piston rings for improved combustion and better sealing. It minimizes soot generated from incomplete combustion and helps keep soot out of the crankcase. Reduced soot loading controls soot related wear and engine oil viscosity increase.

Fuel Stabilizer
Fuel degradation can cause gums, which increase deposits and the chance of filter plugging. AMSOIL Diesel Concentrate significantly improves the oxidation and thermal stability of diesel fuel. It overcompensates for ultra low sulfur diesel fuel’s potential stability loss caused by extra processing and sulfur removal. Diesel fuel treated with AMSOIL Diesel Concentrate easily meets the requirements of the National Council of Weights and Measures (NCWM) Premium Diesel Fuel Specification for resisting diesel fuel degradation.

Improves Water Tolerance
AMSOIL Diesel Concentrate is an alcohol-free product that protects fuel systems against water contamination. It helps prevent fuel/water emulsions and it protects metal against rust. Water can be drained easier and fuel filters are less likely to plug, ensuring drivability.

Heating Oil Improver
AMSOIL Diesel Concentrate provides many of the same benefits in heating oil furnace applications. It provides fuel oil storage stability, water stability, rust protection, fuel oil filter longevity, and in certain applications, can keep fuel oil nozzles clean for proper spray in the combustion chamber. AMSOIL Diesel Concentrate promotes trouble-free operation. AMSOIL Cold Flow Improver is recommended where fuel oil is stored outside.

Recommendations
AMSOIL Diesel Concentrate is recommended for use with all types of heavy- and light-duty, on- or off-road and marine diesel engines. Recommended mix ratio is one oz. of additive per five gallons of fuel. Use with every new tank of fuel for the best performance and protection against fuel pump wear, injector wear and injector deposits. Compatible with all types of exhaust emission systems such as diesel particulate filters (DPFs). Add Diesel Concentrate to fuel before storage. Excellent for use with AMSOIL Cetane Boost and AMSOIL Cold Flow Improver. This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines.

Call 1-800-579-0580 for your discounted case now.
AMSOIL will not put a product on the market unless it is the best and has been proven through numerous trials. We recently heard about the Omaha Public School District using one of our competitors products out of Wichita, KS. The results were a total failure of the diesel busses - so much in fact that it made the news.
In 34 years not one competitor has ever been able to match or compare their product to AMSOIL in independent ASTM or in-house tests matching quality or results.

Special Question and answer section:

New low-emission engine models with high rates of exhaust gas recirculation have inherent lubricant challenges. These engines dump excessive amounts of soot and acids into an oil, accelerating wear on the cylinder walls. Additionally, new engine oils meeting CJ-4 requirements will have lower sulfated ash content, which controls TBN levels. The new mandate only allows enough sulfated ash content to reach a maximum TBN of eight, making TBN retention even more important. New AMSOIL Diesel Concentrate controls these issues by neutralizing acids during combustion. This minimizes acidic cylinder wear and reduces the rate of engine oil TBN depletion, maintaining engine oil quality longer for better protection.

1. Question: Why did AMSOIL separate the cold flow properties from the Diesel Concentrate (ADF)?
Answer:
Combining AMSOIL Diesel Concentrate with a Cold Flow Improver is not cost effective in the summer months, or to AMSOIL customers who live in the south. To keep costs down for customers, AMSOIL Diesel Concentrate no longer includes a cold flow improver. AMSOIL Diesel Concentrate has been reformulated with additional lubricity properties. The new AMSOIL Diesel Concentrate (ADF) is a total system cleaner and lubricity improver for all types of diesel engines.

2. Question:
AMSOIL Diesel Modifier has been discontinued; can the new AMSOIL Diesel Concentrate be used in its
place?
Answer:
Absolutely! No longer are there different fuel additives for heavy- and light-duty diesel engines, simplifying applications for customers. The new AMSOIL Diesel Concentrate meets and exceeds all the requirements for both applications

3. Question:
AMSOIL Home Heating Fuel has been discontinued; can the new Diesel Concentrate be used in its place?
Answer:
Yes, AMSOIL Diesel Concentrate delivers fuel storage stability, rust protection, water separation, and its exceptional cleaning properties are expected to help keep fuel oil nozzles clean. AMSOIL Diesel Concentrate promotes trouble-free operation. AMSOIL Diesel Cold Flow Improver should be recommended when fuel oil is stored outside.

4. Question:
Does the new AMSOIL Diesel Concentrate meet the federal regulations for ultra low sulfur for diesel fuel?
Answer:
Yes, and the packaging label states so as regulated by law.

5. Question:
The old Diesel Concentrate worked well. Why did AMSOIL come out with a new Diesel Concentrate?
Answer:
The federal government mandated the use of ultra low sulfur diesel (ULSD) by June 2006 for the year 2007. ULSD contains <15 parts per million (ppm) sulfur where the previous content was <500 ppm sulfur. Sulfur acts as a lubricity agent that helps protect pumps and injectors from wear. As the sulfur content is lowered, so is the lubricity of the fuel. As a result of lower sulfur content, refiners or fuel distribution depots have been forced to add back some lubricity with the use of additives. This additive is expensive and is only blended in the fuel at the lowest additive concentration (LAC).
The fuel manufacturers have no incentive to add extra additive, which increases costs, so there is inherent risk of unnecessary wear on injectors and pumps. The new AMSOIL Diesel Concentrate Additive adds back all the lubricity and then some to properly protect diesel fuel components.

ULSD fuel has also shown to create more deposits within combustion chambers than previous diesel fuels. Deposits are detrimental to fuel economy, throttle response, and horsepower. AMSOIL Diesel Concentrate is a powerful detergent that cleans fuel system deposits and keeps the system clean with regular use. By cleaning deposits, AMSOIL Diesel Concentrate has shown to increase fuel mileage up to 5%. Consider that at $3.00 per gallon for diesel fuel, even a modest three percent improvement in fuel economy equals a savings of $0.09 per gallon. With a treat rate of one oz. of AMSOIL Diesel Concentrate to five gallons of fuel, at U.S. Retail price, the net treat cost of AMSOIL ADF is only $0.083 per gallon, bringing the total savings to $0.007 per gallon and negating the cost of AMSOIL Diesel Concentrate altogether.
AMSOIL Diesel Concentrate is an alcohol-free product that also protects fuel systems against water contamination. It helps prevent fuel/water emulsions and it protects metal against rust. Water can be drained easier and fuel filters are less likely to plug, ensuring drivability. In addition, fuel degradation can cause gums, which increase deposits and the chance of filter plugging.

AMSOIL Diesel Concentrate significantly improves the oxidation and thermal stability of diesel fuel. These are some key advantages of the new Diesel Concentrate among others identified on the data sheet (G-2236). Diesel equipment is expensive and owner/operators prefer to control the quality of the diesel fuel going into their engines rather than rely on the fuel producers. AMSOIL Diesel Concentrate provides outstanding performance in today’s ULSD fuel as well as the former 500 ppm version fuel and biodiesel. ULSD problems solved!

6. Question:
The claims state that the new Diesel Concentrate helps engine oil maintain TBN. How does it do this?
Answer:
TBN depletion is the result of combustion acids. AMSOIL Diesel Concentrate is designed to neutralize acids during combustion to prevent the acids from attacking the TBN reserve in the engine oil. Additionally, acids from combustion cause acidic cylinder wear. By neutralizing acids during combustion, AMSOIL Diesel Concentrate helps control acidic cylinder wear. These features are particularly important on exhaust gas recirculation (EGR) equipped engines (2002 and newer). By recirculating the exhaust back into the combustion chamber, more acids are introduced, wear increases, and TBN is rapidly depleted. For model year 2007 vehicles, the amount of EGR is being further increased compounding the problem.

Improves combustion efficiency to increase power in diesel engines. Raises cetane three to seven numbers. Also improves low-temperature starting, fuel ignition quality and reliability. Treats up to 80 gallons. Product Code: ACB

Increases Cetane Number and Ignition Quality

Cetane number is the measure of a diesel fuel's ignition quality. Ignition quality is measured by ignition delay, the time between the start of fuel injection and the start of fuel combustion. Fuels with good ignition quality give short ignition delays and are assigned high cetane numbers.

Cetane, the colorless, oily hydrocarbon on which the cetane number scale is based, has extremely good ignition quality and is assigned a cetane number of 100. The cetane numbers of North American diesel fuels may be as low as 37, which may cause startability and drivability problems.

AMSOIL Cetane Boost, ACB, increases a fuel's cetane number and improves its ignition quality. ACB encourages timely, uniform fuel ignition, discourages high pressure rate rise during the combustion cycle and solves startability and drivability problems associated with low cetane number diesel fuels.

Smoothes Operations
Too long an ignition delay at high engine loads leads to an excessively rapid increase in pressure within the cylinder before combustion, which in turn, leads to diesel knock, or rough operation, especially on cold starts. Excessive pressure rise rates are theoretically caused by extra chemical reactions occurring before combustion. The products formed by the extra reactions burn rapidly. Rapid burning causes excessively rapid pressure rise in the cylinder. With a shorter ignition delay, the extra reactions don't have a chance to occur, hence the rate of pressure rise is reduced.

By reducing ignition delay, ACB maintains the proper cylinder pressure rise rate. Maintaining the proper pressure rise rate improves drivability. ACB also improves drivability by reducing throttling pintle nozzle coking. Throttling pintle nozzle coking produces noise and emissions. ACB cleans up coke deposits and prevents the formation of new deposits. ACB also reduces varnish formation.

Reduces Emissions
ACB substantially reduces hydrocarbon and carbon monoxide emissions of heavy-duty on-road diesel trucks. By shortening the ignition delay, ACB helps fuel burn more completely, reducing carbon monoxide and hydrocarbon emissions. ACB may also reduce NOx and particulate emissions.

Available in Convenient Size
One 16-oz. can of ACB treats 100 to 200 gallons of diesel fuel and increases the fuel's cetane number three to seven points. Adding one can to 100 gallons of fuel provides maximum benefit.
Compatible with AMSOIL Diesel Fuel Additive Concentrate
ADC improves fuel efficiency, lengthens component life and aids cold temperature fuel flow. ACB contains no ethanol, methanol, MTBE or other alcohol.
Increase Performance, Profits

AMSOIL Diesel Fuel Additive Concentrate and AMSOIL Cetane Boost decrease expenses for fuel, injector cleanings and replacements. Even costly road service for cold temperature related failures.

ADC increases fuel economy and injector life, promotes reliable cold temperature operations and reduces emissions and black smoke. ACB increases cetane number and ignition quality for smooth, powerful operation, reliable cold starting and decreased emissions and white smoke.

NEW Diesel Concentrate Plus Cold Flow Improver

AMSOIL Diesel Concentrate Plus Cold Flow Improver is formulated with excellent detergency properties to help keep injectors, rings, piston crowns and the fuel pump lubricated. By improving injector performance, combustion becomes more efficient and less soot is generated. Diesel Concentrate Plus Cold Flow Improver cleans dirty injectors, improving fuel economy by up to five percent and restoring horsepower to like new. Acceleration is improved and with regular use, Diesel Concentrate Plus Cold Flow Improver continues to enhance performance by keeping injectors clean. The net savings on fuel expense can result in no additional cost to vehicle operation.

Buy all or any of these items in the Store Fuel Additive section

Superior Cold-Weather Performance
As the temperature drops, the wax naturally found in diesel fuel begins to form crystals. The point at which wax crystals form is known as the cloud point. These wax crystals eventually clog the fuel filter and starve the engine of fuel, preventing it from starting. While low quality fuels may form wax crystals in temperatures as warm as 40°F (4°C), most fuels have a cloud point near 32°F (0°C). The point at which the wax crystals clog the fuel filter is known as the cold filter-plugging point (CFPP). AMSOIL Diesel Concentrate Plus Cold Flow Improver lowers the CFPP by as much as 34°F (19°C) in ultra-low-sulfur diesel fuel (ULSD). It also reduces the pour-point temperature of treated diesel fuel, providing better fuel delivery to the injectors during cold weather. It is formulated with a jet-fuel type deicer that controls ice formation in all sections of the fuel system. Diesel Concentrate Plus Cold Flow Improver minimizes the need for the use of #1 diesel fuel, enabling better fuel economy, performance and lubricity. Product performance may vary depending on diesel grade and quality.

Pour Point Vs. CFPP
It is important to distinguish between CFPP and pour point. Many competitors make great claims regarding pour point, leading consumers to believe their products are superior when they actually have an inferior CFPP. Once fuel surpasses its cloud point, the wax crystals begin to clog the fuel filter. The CFPP temperature is a more important characteristic than pour point because the engine will not run if fuel cannot pass through the fuel filter.

AMSOIL Diesel Recovery (DRC) is an emergency diesel
fuel treatment that quickly dissolves the wax crystals that form when diesel fuel has surpassed its cloud point. It liquefi es gelled diesel fuel and thaws frozen fuel fiters, avoiding costly towing charges and getting
diesel vehicles back on the road. Diesel fuel quality
varies from one fi lling station to the next, and lowquality fuel can have a cloud point as high as 4.4°C (40°F), making Diesel Recovery a necessity for
diesel operators in cold-weather climates.

Cold Weather and Diesel Fuel

As the temperature drops, the wax naturally found
in diesel fuel begins to form crystals. The point at
which wax crystals form is known as the cloud point.
These wax crystals eventually clog the fuel fi lter and
starve the engine of fuel or prevent it from starting.

Available in Gallon and smaller 30 oz. size. Case lots too. Call 800-579-0580 to beat online price.

ORDER CODE - DRCCN-EA for the 30 oz. each
DRCCN-CA for the 12 bottle case
DRC1G-EA for each gallon
DRC1G-CA for gallon case of 4

#1 Diesel Fuel

One traditional solution to cold-weather problems in diesel engines is the use of #1 diesel fuel, which is diesel fuel diluted with kerosene. While #1 diesel fuel has an advantage in low-temperature operability, there are also several disadvantages. The energy content of #1 diesel fuel is about 95 percent of #2 diesel fuel, resulting in reduced fuel economy and less horsepower. In addition,
the kerosene used in #1 diesel fuel provides less lubrication for the fuel pump and fuel distributor, increasing the likelihood for wear on these critical components.

Cold-Weather Performance Parameters

AMSOIL Cold Flow Improver (ACF) effectively maintains fuel fl ow in cold weather, reducing the cold fi lter-plugging point (CFPP) by up to 34°F (19°C) in ultra-low-sulfur diesel fuel (ULSD). However, Cold Flow Improver must be added to diesel fuel before it reaches its cloud point, and it will not dissolve wax or liquefy diesel fuel once wax crystals have formed. AMSOIL Diesel Recovery is specifically formulated to address these problems.
Many competitive products make great claims regarding pour point, leading consumers to believe their products are superior when they actually have an inferior CFPP. Once fuel surpasses its cloud point, the wax crystals begin to
clog the fuel filter. The CFPP temperature is a more important characteristic than pour point because the engine will not run if fuel cannot pass through the fuel filter.

Diesel Recovery Proven Superior

In order to test the performance capabilities of AMSOIL Diesel Recovery, AMSOIL commissioned an independent laboratory to perform an evaluation. Three types of diesel fuel were used in the testing, including ultra-low-sulfur diesel (ULSD), B2 biodiesel and B5 biodiesel. Three samples of each fuel-type were tested: one treated with AMSOIL Diesel Recovery, one treated with Power Service Diesel 911 and one untreated sample. Diesel Recovery was administered at the recommended treat rate of 30 oz. per 30 gallons of fuel. The treat rate for Diesel 911 varies according to package size; Power Service’s maximum recommended dosage of 32 oz. per 30 gallons of fuel was used in this evaluation.

As the results demonstrate, AMSOIL Diesel Recovery delivers superior performance. In ULSD, Diesel Recovery reduced the fuel’s pour point by 27°C and the CFPP by 17°C. Diesel 911, on the other hand, only reduced the pour point of ULSD by 10.5°C and actually increased the fuel’s CFPP by .5°C. In B2 biodiesel, AMSOIL Diesel Recovery reduced the fuel’s pour point 9°C and reduced the CFPP 9.75°C; while Diesel 911 increased the fuel’s pour point 5.25°C and reduced the CFPP only 6°C. Diesel Recovery reduced the pour point of B5
biodiesel 24°C and reduced the CFPP 16°C. Diesel 911 reduced the pour point of B5 18°C and again increased the CFPP 1.75°C.

Dependable Performance

As state, provincial and federal governments continue to impose new mandates on diesel fuel regarding sulfur and bio-matter content, it is increasingly important to offer products that perform well in all available types of fuel.
While fuel systems and fuel quality vary, AMSOIL Diesel Recovery delivers dependable performance in all diesel fuels, including ULSD, off-road and biodiesel. In addition, Diesel Recovery is alcohol-free, making it safe for repeated treatments.

1. Question:
Why did AMSOIL decide to reintroduce a combination Diesel Concentrate plus Cold Flow Improver (DFC) additive?
Answer: AMSOIL responded to the need for convenience by providing a product that combined the properties of the Diesel Fuel Concentrate and the Cold Flow Improver in a single package.

2.Question:
What function does AMSOIL Diesel Concentrate plus Cold Flow Improver perform?
Answer: This product combines all the benefits of both the AMSOIL Diesel Fuel Concentrate and the AMSOIL Cold Flow Improver. The diesel fuel concentrate portion of the product performs several important tasks, including keeping injectors, rings and piston crowns lubricated and free of soot buildup. It improves lubricity and minimizes wear throughout the fuel system. It also helps manage water, which enters fuel through condensation from the air inside fuel tanks and demulsifies fuel/water mixtures. The cold flow attributes reduce cold flow filter plugging point and diesel fuel pour point.

3. Question:
What are some key advantages for the AMSOIL Diesel Concentrate plus Cold Flow Improver?
Answer: a. Increases fuel economy up to 5%.
b. Restores horsepower and throttle response to “like new” performance.
c. Cleans injectors and combustion chambers.
d. Provides superior fuel flow to help prevent filter plugging in cold temperatures.
e. Reduces pour point of the fuel, making fuel flow to the engine easier.
f. Improves diesel engine reliability in cold temperatures.
g. Effective in a broad range of diesel fuels, including biodiesel and hard to treat USLD fuels.
h. Minimizes the need for blending standard #2 diesel fuel with lower quality #1 diesel fuel during cold temperatures.
i. Excellent for use with home heating oil and kerosene heat systems.
j. Aids in the retention of the engine oil’s total base number (TBN).
k. Extends fuel filter life.

4. Question:
What is Ultra Low Sulfur Diesel (USLD)?
Answer: USLD is fuel which has been hydro-treated at the refinery to reduce sulfur to no more than 0.0015% by weight (15 PPM). It is a legal specification mandated for environmental reasons and is required for all on-road diesel applications. It does, however, reduce the diesel fuel’s natural lubricating properties.

5. Question: Will DFC adequately treat federally regulated USLD?
Answer: Yes. AMSOIL Diesel Concentrate plus Cold Flow was specifically designed and tested with ultra low sulfur diesel fuels. This fuel is different than traditional diesel fuel in several ways and is more difficult to properly treat. AMSOIL Diesel Concentrate plus Cold Flow also treats traditional high sulfur content diesel fuel.

6. Question:
Does AMSOIL DFC improve engine performance?
Answer: By keeping injectors clean, AMSOIL Diesel Concentrate plus Cold Flow maintains the designed performance of the engine. If injectors become clogged, the spray pattern is affected and AMSOIL additives will clean the injectors to restore the original pattern and performance level.

7. Question:
What is the treat rate for Diesel Concentrate plus Cold Flow?
Answer: The treat rate is 2 ounces of additive per 5 gallons of fuel or one 16 ounce bottle to 40 gallons of fuel. The bottle is natural in color and is graduated for accurate dispensing to ensure proper mixing ratios.

8. Question:
What should be done to adjust for the cold temperatures during the winter months?
Answer: AMSOIL recommends purchasing diesel fuel that has been blended for winter use in that specific region, then adding AMSOIL Diesel Concentrate plus Cold Flow. This will ensure the engine or heating system will function on very cold days when needed most.

9. Question:
Should DFC be used in the diesel fuel to keep already gelled fuel from clogging the delivery system?
Answer: No. As temperatures drop, the wax, which is naturally found in the fuel, begins to form crystals. This is called the cloud point. These wax crystals will eventually clog the fuel filter and starve the engine of fuel or prevent it from starting. AMSOIL Diesel Concentrate plus Cold Flow must be added to the fuel before it gets cold enough for the wax crystals to begin forming. AMSOIL Diesel Concentrate plus Cold Flow will not dissolve wax or improve diesel fuel once wax crystals form. Low quality fuels may form wax crystals in temperatures as warm as 40°F. AMSOIL recommends Diesel Concentrate plus Cold Flow be added to fuel when temperatures approach 32°F, which is above the cloud point of most diesel fuel.

10. Question:
What type of performance can be expected from the new AMSOIL Diesel Concentrate plus Cold Flow?
Answer: AMSOIL Diesel Concentrate plus Cold Flow Improver inhibits wax crystal formation and can improve diesel fuel pour point. With the incorporation of DFC into ULSD, pour point decreased 31°F (17°C) and Cold Flow Filter Plugging Point (CFPP) was decreased by 36°F (20°C). Product performance depends on fuel type and quality.

11. Question:
Competitive products claim better cold temperature properties than AMSOIL DFC. Are these claims legitimate?
Answer: AMSOIL Diesel Concentrate plus Cold Flow was tested against a leading diesel fuel cold flow improver as part the development. The AMSOIL product outperformed competitive products particularly with B20 biodiesel and ULSD. Competitor claims can be misleading. It is important to distinguish between cold filter plugging point (CFPP) and pour point. Many competitive products make great pour point claims, leading consumers to believe their products are superior, when in reality the CFPP is inferior. The CFPP depression temperature is more important because fuel will not make it to the engine if the fuel filter is clogged.

12. Question:
What about using #1 diesel fuel instead?
Answer: AMSOIL Diesel Concentrate plus Cold Flow Improver minimizes the need for #1 diesel fuel in cold weather which reduces overall costs and lessens the impact from loss of lubricity with #1 diesel fuel. While #1 diesel fuel has an advantage in low temperature operability, there are several disadvantages as well. The energy content of #1 diesel fuel is about 95% that of #2 diesel fuel, resulting in reduced fuel economy and horsepower. #1 diesel fuel contains kerosene which provides less lubrication for the fuel pump and fuel distributor, increasing the chances of wear on these critical parts. In addition, #1 diesel fuel is more expensive.

14. Question:
Does AMSOIL DFC meet the federal regulations for ULSD fuel?
Answer: Yes. The statement found on the back label of AMSOIL DFC states, “This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines.”
EPA regulation for diesel fuel additives went into effect on June 1, 2006. This regulation requires that all diesel fuel additives sold after June 1, 2006 with a sulfur content not exceeding 15 ppm sold in containers for use by the ultimate consumer must have the following statement:
“This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines.'' For more information consult: http://www.aspalliance.org/dieselfuel/index.htm

15. Question:
Will using Diesel Concentrate plus Cold Flow void engine warranties?
Answer: The use of Diesel Concentrate plus Cold Flow will not void engine warranties and it is designed to help decrease engine fuel system wear from poor lubricity ULSD fuels.

Diesel Cold Flow Improver (DFF)
Combining AMSOIL Diesel Concentrate with a cold flow improvement property is not cost effective in the summer months, or to AMSOIL customers who live in the south. To keep costs down for customers, AMSOIL Diesel Concentrate (ADF) no longer includes a cold flow improver. Instead, AMSOIL provides new AMSOIL Diesel Cold Flow Improver (DFF) for low-temperature applications below 40°. Designed for automotive, light truck, heavy duty and marine applications.

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