Cleans Diesel Fuel Injectors and Prevents Diesel Fuel Gelling without Sacrificing Performance
Improves Fuel Economy up to 4.5% and Pays for Itself!

AMSOIL Diesel Injector Clean + Cold Flow Anti Gel (Product Code: DFC) combines two diesel fuel additives in one convenient package without sacrificing performance: the superior deposit-removing properties of AMSOIL Diesel Injector Clean and the excellent anti-gelling properties of AMSOIL Cold Flow Diesel Anti-Gel Fuel Additive with Deicer.
AMSOIL Diesel Injector Clean + Cold Flow is specifically formulated to improve the lubrication of fuel system components, improve fuel flow, help maintain fuel integrity and prevent the fuel filter and fuel injectors from clogging. It contains a deicer to disperse water commonly found in diesel fuel and inhibit diesel fuel icing throughout the fuel system.
By cleaning dirty fuel injectors with its powerful cleaner, AMSOIL Diesel Injector Clean + Cold Flow increases fuel economy up to 4.5 % and restores horsepower and operability to like-new condition.
AMSOIL Diesel Injector Clean + Cold Flow is designed for all types of diesel engines, including high-pressure common-rail (HPCR) systems. Unlike all-in-one fuel additives that may sacrifice performance in specific areas in the name of convenience, AMSOIL Diesel Injector Clean + Cold Flow makes no sacrifices; it is purpose-built for diesel owners who demand maximum results.
- Improves fuel economy up to 4.5%
- Improves diesel combustion
- Cleans dirty diesel fuel injectors and restores horsepower
- Lubricates fuel pump and fuel injectors to reduce wear
- Complies with low sulfur requirements
- Minimizes diesel soot
- Improves diesel cold-weather performance
- Improves diesel cold-flow ability by up to 20°F (15°C)
- Prevents diesel fuel gelling
- Contains a deicer to disperse water commonly found in diesel fuel and prevent ice formation in diesel fuel system
- Reduces the need for #1 diesel, helping to maintain fuel economy
- Excellent for use with AMSOIL Diesel Cetane Boost
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AMSOIL Diesel Injector Cleaner + Cold Flow Anti-Gel Fuel Additive with Deicer Product Code Pkg/Size DFCCN-EA 16-Ounce Bottle DFCCN-CA 16-Ounce Bottles (case of 12) DFC05-EA 5-Gallon Pail DFC55-EA 55-Gallon Drum -
Increases Fuel Mileage and Restores Diesel Power
Diesel engines become less efficient over time. Fuel injector deposits interrupt spray patterns, causing poor fuel atomization, incomplete combustion, excessive emissions and smoke. Clean diesel fuel injectors spray evenly. AMSOIL Diesel Injector Clean + Cold Flow does an outstanding job at cleaning dirty diesel fuel injectors — it features an advanced chemistry that delivers concentrated strength to target internal diesel fuel injector deposits and traditional carbonaceous deposits, restoring horsepower and operability to like-new condition and improving diesel fuel economy up to 4.5 percent. Acceleration is improved and with regular use, AMSOIL Diesel Injector Clean + Cold Flow continues to enhance diesel performance by keeping fuel injectors clean.
The net savings on diesel fuel costs can result in no additional cost to vehicle operation, so this is a product that pays for itself!
Cleans Diesel Fuel Injector Deposits in High Pressure Common Rail (HPCR) and Traditional Diesel Fuel Systems
High-pressure common-rail fuel systems are becoming commonplace as vehicle manufacturers attempt to produce more power while still meeting tightening emissions standards. In high-pressure common-rail systems, injection pressures near 30,000 psi atomize the fuel into a fine mist for more efficient combustion, yielding increased power and fuel economy while reducing emissions. To maintain these high pressures, injector assemblies are highly engineered, with clearances as tight as 1-3 microns (a human hair is typically 70-100 microns thick). Even minimal internal diesel injector deposits on the injector pintle or other components can lead to sticking and even seizure, reducing power, fuel economy and operability.
Traditional additive chemistry is not designed to address these tough-to-remove deposits. While many other fuel additives have yet to catch up to the internal diesel injector deposit problem, AMSOIL Diesel Injector Clean + Cold Flow targets deposits wherever they form, maximizing power, fuel economy and performance in high pressure common rail and traditional diesel engines.
For more information, visit our AMSOIL Diesel Injector Clean page.
Lubricates Fuel Pump and Fuel Injectors to Control Wear and Increase Service Life
Ultra low sulfur diesel fuel (ULSD) has significantly reduced lubricity — a critical property in controlling wear in fuel pumps and diesel fuel injectors. AMSOIL Diesel Injector Clean + Cold Flow adds back the lubricity the fuel pump and injectors need, improving service life and saving time and money on maintenance costs.
Minimizes Soot Loading
AMSOIL Diesel Injector Clean + Cold Flow’s powerful formula cleans fuel injectors and piston rings for improved combustion and better sealing. It minimizes diesel 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.
Superior Cold Weather Diesel 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 Injector Clean + Cold Flow lowers the CFPP by as much as 20°F (15°C) in ULSD.
Prevents Diesel Fuel Gelling
AMSOIL Diesel Cold Flow prevents diesel fuel gelling by improving diesel cold-flow ability.
Pour Point vs Cold Filter Plugging Point (CFPP)
It is important to distinguish between CFPP and pour point. Many competitors make great claims regarding diesel 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.
Reduces Need for #1 Diesel Fuel For Better Fuel Economy
One traditional solution to diesel engine cold weather problems is the use of number 1 diesel fuel, which is diesel fuel diluted with kerosene. While number 1 diesel fuel has an advantage in low temperature operability, there are also several disadvantages. The energy content of number 1 diesel fuel is about 95 percent of that of number 2 diesel fuel, resulting in reduced fuel economy and less horsepower. In addition, the kerosene used in number 1 diesel fuel provides less lubrication for the fuel pump and fuel distributor, increasing the likelihood for wear on these critical components. AMSOIL Diesel Injector Clean + Cold Flow minimizes the need for blending standard number 2 diesel fuel with lower-quality number 1 diesel fuel for better fuel economy and diesel performance.
Disperses Water in Diesel Fuel to Control Ice Formation
AMSOIL Diesel Injector Clean + Cold Flow diesel fuel additive uses a jet-fuel-type deicer that disperses water to control ice formation throughout the fuel system, offering protection against water commonly found in diesel fuels. It inhibits wax crystal formation, allowing fuel to flow to the engine more easily and improving diesel engine reliability in cold weather. In addition, AMSOIL Diesel Cold Flow lowers the CFPP (cold filter plugging point) by as much as 20°F (15°C) in ULSD.
Applications
AMSOIL Diesel Injector Clean + Cold Flow (DFC) is recommended for use with all types of heavy- and light-duty, on or off road and marine diesel engines.
Treatment Rate
One 16-ounce bottle of AMSOIL Diesel Injector Clean + Cold Flow treats 40 gallons of fuel. Using the fuel mix ratio in the chart below, add the appropriate amount of AMSOIL Diesel Injector Clean + Cold Flow before filling the tank.
AMSOIL Diesel Injector Clean + Cold Flow must be added at temperatures above the diesel fuel cloud point (the temperature at which wax begins to crystallize). It will not reverse gel or wax crystals once formed. Do not store at temperatures below 0ºF (-18ºC). Freezing will not harm AMSOIL Diesel Injector Clean + Cold Flow and it can be used once it is thawed. If product freezes, rewarm and shake thoroughly to restore normal functionality.
AMSOIL Diesel Injector Clean + Cold Flow is compatible and excellent for use with AMSOIL Diesel Cetane Boost.
When diesel fuel has surpassed its cloud point, AMSOIL Diesel Recovery Emergency Fuel Treatment can quickly dissolve the wax crystals. It liquefies gelled diesel fuel and thaws frozen fuel filters to fix the problem and avoid costly towing charges.
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