Diesel Injector Clean

AMSOIL Diesel Injector Clean (ADF/ADFP) removes performance-robbing deposits from diesel fuel injectors to help restore horsepower and improve fuel economy. It is formulated for all types of diesel engines, including high-pressure common-rail designs.

Cleans and Protects

Diesel Injector CleanDiesel Injector Clean is formulated to clean both the tough-to-remove internal diesel injector deposits surfacing in modern high-pressure common-rail diesel engines and traditional carbonaceous deposits. Diesel Injector Clean delivers confidence in your diesel’s performance. Its concentrated formula uses unique chemistry to target and eliminate specific performance issues, maximizing diesel power.

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Helps Restore Horsepower & Improve Fuel Economy

Fuel injector deposits interrupt spray patterns, causing poor fuel atomization, incomplete combustion, excessive emissions and smoke. 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 can be 30,000 psi and higher to 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.

Diesel Injector Clean features advanced chemistry that delivers concentrated strength to target internal diesel injector deposits and traditional carbonaceous deposits, helping to restore horsepower and operability to like-new condition. Acceleration is improved and, with regular use, Diesel Injector Clean continues to enhance performance by keeping injectors clean. The net savings on fuel can result in no additional cost of ownership.

Lubricates Fuel Pump & Injectors to Reduce Wear

Ultra-low-sulfur diesel fuel (ULSD) provides significantly reduced lubricity – a critical property in controlling wear in fuel pumps and injectors. Diesel Injector Clean adds back the lubricity the fuel pump and injectors need, reducing wear, improving service life and saving time and money on maintenance costs.

  • Cleans dirty injectors
  • Lubricates pumps and injectors to reduce wear
  • Extends fuel-filter life
  • Improves fuel economy up to 8%
  • Restores power and torque
  • Reduces smoke and emissions
  • Helps prolong time between EGR and DPF regenerations
  • Combats fuel-system corrosion
  • Reduces downtime and maintenance costs
  • Safe for use in all diesel fuels, including biodiesel
  • Alcohol-free

Minimizes Soot-Loading

Diesel Injector Clean’s powerful formula 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, reducing soot-related wear and engine oil viscosity increase.

Separates Fuel and Water

Diesel Injector Clean is an alcohol-free product that protects fuel systems against water contamination. It helps prevent fuel/water emulsions so that separating filters can safely remove water before it reaches the injectors, where it can cause corrosion. Water can be drained easier, ensuring drivability.

Extends Filter Life

Modern diesel engines run hot, raising the temperature of the fuel returned to the tank and causing carbonaceous deposits that collect in the fuel filter (see picture), plugging it and causing premature failure issues. AMSOIL Diesel Injector Clean effectively protects against deposits, extending fuel filter life.

diesel fuel filter flow improved


Diesel Injector Clean is recommended for use with all types of heavy- and light-duty, on- or off-road and marine diesel engines. For initial use, follow the Clean-Up recommendation; use Maintenance dose for regular treatment. Use with every tank of fuel for best performance and protection against fuel-pump wear, injector wear and injector deposits. Compatible with all types of exhaust emission systems, including diesel particulate filters (DPFs). Add to fuel before storage. Excellent for use with AMSOIL Diesel Cetane Boost and AMSOIL Diesel Cold Flow.






AMSOIL products are backed by a Limited Liability Warranty. For complete information visit www.amsoil.com/warranty.aspx.

Fuel injectors in high-pressure common-rail diesel engines use smaller, highly engineered components to produce the higher fuel pressures needed for improved combustion. The tighter clearances invite internal diesel injector deposits that interfere with injector needle actuation, reducing performance. External deposits can also form on the injector nozzle (the typical trouble spot for traditional injectors). While many other fuel additives have yet to catch up to the internal diesel injector deposit problem, AMSOIL Diesel Injector Clean targets deposits wherever they form, maximizing power, fuel economy and performance in high-pressure common-rail and traditional diesel engines.


Diesel Fuel Additive Reviews

I would buy again
By  Aaron,  a  Verified Buyer  from  Kansas  on  March 19, 2019
It works as advertised.
By  Rick,  a  Verified Buyer  from  Va  on  March 09, 2019
I use everything amsoil used it on a road trip is winter blend picked up little over 1.5 mpg

Good product
By  Gilly,  a  Verified Buyer  from  San Antonio, Tx  on  March 07, 2019
Use this product whenever it comes time to change my fuel filter.

Good stuff
By  Big “A”,  a  Verified Buyer  from  Greenville Al  on  January 07, 2019
You can feel the difference
I would buy this product again.
By  Dylan,  a  Verified Buyer  from  Ohio  on  December 26, 2018
Always loved using this product. The case of 6 fits perfectly in my toolbox. I have a 2005 F-250 with the 6.0L and still have factory injectors at 222,000 miles. Plus the added fuel mileage is a bonus.


Eliminate injector problems
By  WC,  a  Verified Buyer  from  Nevada  on  November 27, 2018
90,000 + miles no problems exhaust very clean


work for me
By  Ben Boulet,  a  Verified Buyer  from  Ingleside, Ontario, Canada  on  November 25, 2018
been using this product for the last12 yrs on my 2006 Ram 2500 HD HO,Laramie ext cab, 5.9 lt cummins. I drop some in the fuel at every second tank , My average fuel usage has follow: empty 8.5 liters/100 kilo, loaded with a Lance camper (4000 pds) with a big tex trl with a CJ-5 jeep, average 13,5 liters/100 kilo. Voila I’m not complaining at all . Amsoil is numero uno for me


The only product i buy to keep my injectors clean
By  Mr B,  a  Verified Buyer  from  Battleground WA  on  June 24, 2018
I use this every time i get fuel


the best product I have found to date!!!
By  The Dude,  a  Verified Buyer  from  Eugene Oregon  on  June 10, 2018
Used on an old Mercedes 300D which smoke a lot. After 2 tanks of treatment it barly smokes or not at all!!!


Never leave home without it
By  Ryan,  a  Verified Buyer  from  Missouri  on  June 10, 2018
Works like it should one bottle in and all is good


Great product
By  Rick,  a  Verified Buyer  from  Roanoke, Va.  on  May 26, 2018
Ram 6.7 runs excellent with the injector clean along with celtane boost.
Injector cleaner Works well
By  JMN’s diesel dog,  a  Verified Buyer  from  Florida and beyond  on  May 23, 2018
Run every 3-4 oil changes


I would definitely buy this product again
By  Are use this product in my diesel truck,  a  Verified Buyer  from  Lapeer mi  on  May 21, 2018
Are use this product in my diesel truck


Really does help with mileage and it cleans
By  Bobbo,  a  Verified Buyer  from  Bandera Tx  on  May 06, 2018
Not expensive, easy to use and a must when owning a diesel