Diesel Concentrate Plus Cold Flow Improver (DFC)
 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.
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IMPROVES EFFICIENCY
AMSOIL Diesel Concentrate Plus Cold Flow Improver is formulated with excellent detergency properties to help keep
injectors, rings and piston crowns lubricated and free of soot. 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.
ULTRA-LOW-SULFUR DIESEL FUEL CHALLENGES
The reduced sulfur levels in modern ultra-low-sulfur diesel fuel (ULSD) result in reduced lubricity, the property
that controls wear in the fuel injectors and fuel pump. Improving lubricity in ULSD is difficult because it must be
done without adding sulfur back into the fuel. Additionally, ULSD is subjected to extensive refining, making it
even more difficult to treat. For these reasons, many competitive claims are not based on ULSD fuels, rendering
them inaccurate and irrelevant. AMSOIL Diesel Concentrate Plus Cold Flow Improver is formulated specifically for
modern ULSD fuel. It improves lubricity, helps maintain engine oil TBN and prevents soot loading.
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 Plus Cold Flow Improver 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 Plus Cold Flow Improver 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 sootloading controls soot-related wear and engine oil viscosity increase.
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 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 disperses water to control
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.
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.
REDUCED NEED FOR #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 that 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. AMSOIL Diesel Concentrate Plus Cold Flow Improver minimizes the need for blending standard #2 diesel
fuel with lower-quality #1 diesel fuel, helping to maintain fuel economy and keep engines functioning normally.
RECOMMENDATIONS
One 16-oz. bottle of AMSOIL Diesel Concentrate Plus Cold Flow Improver treats 40 gallons of fuel. Diesel
Concentrate Plus Cold Flow Improver will show no signs of solidifying in its concentrated state in the bottle until
the temperature reaches -22°F (-30°C). It will only freeze in its concentrated state, and AMSOIL recommends storing
it at temperatures above 0°F (-18°C). If Diesel Concentrate Plus Cold Flow Improver is allowed to freeze in the
bottle it can be thawed and used. When mixed with diesel fuel, Diesel Concentrate Plus Cold Flow Improver
effectively improves diesel fuel cold-temperature properties. It is important to treat fuel before it has reached
its cloud point as Diesel Concentrate Plus Cold Flow Improver will not dissolve wax crystals which have already
formed in the fuel.
AMSOIL Diesel Concentrate Plus Cold Flow Improver meets federal regulations for ULSD fuel. It
complies with federal low-sulfur content requirements for use in diesel motor vehicles and non-road engines. While
Diesel Concentrate Plus Cold Flow Improver is formulated specifically for ULSD fuel, it also performs well with
non-ULSD fuels, including biodiesel.
AMSOIL Diesel Concentrate Plus Cold Flow Improver is specifically formulated to improve the
lubrication of fuel system components, improve fuel flow, help maintain fuel integrity and prevent the fuel filter
and injectors from clogging. Diesel Concentrate Plus Cold Flow Improver is recommended for diesel-powered vehicles,
home heating oil and kerosene heating systems.
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