Cleans and Protects
AMSOIL Diesel Injector Clean Fuel Additive
- 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.
Package sizes include:
Restores Horsepower & Improves Fuel Economy
Diesel fuel injector deposits disrupt spray patterns, leading to poor fuel atomization, incomplete combustion, increased emissions, and excess smoke. These issues are especially problematic in high-pressure common-rail fuel systems, where injection pressures approaching 30,000 psi rely on extremely tight tolerances.
Injector components in these systems operate with clearances as small as 1–3 microns. Even minimal internal diesel injector deposits on the injector pintle or needle can cause sticking or seizure, reducing combustion efficiency, fuel economy, and overall performance. Traditional diesel fuel additives are not formulated to address these tough internal deposits.
AMSOIL Diesel Injector Clean uses advanced chemistry to remove both internal diesel injector deposits and traditional carbonaceous buildup. The result is restored horsepower, smoother acceleration, improved power and torque, and fuel economy gains of up to 4.5 percent. With regular use, injectors stay cleaner, helping maintain peak performance and offset fuel costs over time.
Lubricates Fuel Pump & Injectors
Ultra-low-sulfur diesel fuel (ULSD) has significantly reduced lubricity – a critical property in controlling wear in fuel pumps and injectors. AMSOIL Diesel Injector Clean adds back the lubricity the fuel pump and injectors need, improving service life and saving time and money on maintenance costs.
- Formulated for all diesel fuel systems, including high-pressure common-rail designs
- Cleans dirty injectors
- Adds lubricity to reduce fuel-pump & injector wear
- Improves fuel economy up to 4.5 percent
- Improves power & torque
Reduces Soot and Improves Combustion Efficiency
By cleaning fuel injectors and piston rings, AMSOIL Diesel Injector Clean promotes more complete combustion and improved sealing. This minimizes soot loading caused by incomplete combustion and helps keep soot out of the crankcase, reducing soot-related wear and oil thickening between oil changes.
Separates Fuel and Water
This alcohol-free diesel fuel additive helps prevent fuel and water emulsions, allowing fuel filters to effectively separate and remove water before it reaches sensitive fuel system components. Improved water separation helps prevent corrosion, supports cold-weather drivability during winter months, and protects injectors and pumps from moisture-related damage.
Heating Oil Performance Benefits
AMSOIL Diesel Injector Clean can also be used in heating oil applications. It improves fuel storage stability, provides corrosion protection, extends fuel-oil filter life, and helps keep fuel-oil nozzles clean for proper spray and combustion. For outdoor fuel storage in freezing temperatures, AMSOIL Diesel Cold Flow Improver is recommended.
Key Benefits at a Glance
Cleans dirty diesel fuel injectors, restores horsepower and torque, improves fuel economy up to 4.5 percent, adds lubricity to protect fuel pumps and injectors, improves combustion efficiency, minimizes soot loading, separates fuel and water, compatible with DPF and modern emissions systems
Recommended Use
AMSOIL Diesel Injector Clean is recommended for all light- and heavy-duty diesel engines, including on-road, off-road, marine, and high-pressure common-rail applications. For best results, follow the initial clean-up dose, then use the maintenance dose regularly. Using the product with every tank helps maintain injector cleanliness, improve fuel economy, and reduce fuel system wear.
Compatible with diesel particulate filters and emissions systems. Safe for use with AMSOIL Diesel Cetane Boost and AMSOIL Diesel Cold Flow Improver. Add to fuel before storage. Complies with federal low-sulfur diesel fuel requirements.
CLEAN-UP MAINTENANCE FUEL VOLUME 2 oz. 1 oz. 5 Gal. 4 oz. 2 oz. 10 Gal. 12 oz. 6 oz. 30 Gal. 32 oz. 16 oz. 80 Gal. Use this treat rate chart for the 8-oz. size
CLEAN-UP MAINTENANCE FUEL VOLUME 2 Bottles 1 Bottle Up to 20 Gal. 
High-Pressure Common-Rail Fuel Injector Pintal & Traditional Fuel Injector Pintal
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.

AMSOIL PRODUCT WARRANTY
AMSOIL products are backed by a Limited Liability Warranty.
ADF Packaging Information
| Code | Package Size | Unit of Measure | Product |
| ADFPCN (ADFPCN-EA) | 8-Oz. Bottle | Each | ORMD Diesel Injector Clean |
| ADFPCN (ADFPCN-CA) | 8-Oz. Bottle | Case of 6 | ORMD Diesel Injector Clean |
| ADFCN (ADFCN-EA) | 16-Oz. | Each | Diesel Injector Clean |
| ADFCN (ADFCN-CA) | 16-Oz. | Case of 12 | Diesel Injector Clean |
| ADFHG (ADFHG-EA) | 64-oz. Bottle | Each | Diesel Fuel Additive Concentrate |
| ADFHG (ADFHG-CA) | 64-oz. Bottle | Case of 6 | Diesel Fuel Additive Concentrate |
| ADF05 (ADF05-EA) | 5-Gallon Pail | Each | Diesel Fuel Additive Concentrate |
| ADF55 (ADF55-EA) | 55-Gallon Drum | Each | Diesel Fuel Additive Concentrate |







