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AMSOIL Diesel Injector Clean 16 oz bottle
Fuel Additives Injector Clean

AMSOIL Diesel Injector Clean

Product Code ADFCN-EA
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Cleans and Protects

AMSOIL Diesel Injector Clean 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. Diesel 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.

Key Benefits

  • 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

Proven Performance

Helps Restore Horsepower & Improve Fuel Economy. Fuel injector deposits interrupt spray patterns, causing poor fuel atomization, incomplete combustion, excessive emissions and smoke. In high-pressure common-rail systems, injection pressures can be 30,000 psi and higher, and injector clearances are as tight as 1-3 microns (a human hair is typically 70-100 microns thick). AMSOIL Diesel Injector Clean features advanced chemistry that targets internal diesel injector deposits and traditional carbonaceous deposits, helping restore horsepower and operability to like-new condition.

Lubricates Pumps & Injectors. Ultra-low-sulfur diesel fuel (ULSD) provides significantly reduced lubricity. AMSOIL Diesel Injector Clean adds back the lubricity the fuel pump and injectors need, reducing wear and improving service life.

Minimizes Soot-Loading. Diesel Injector Clean 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. AMSOIL Diesel Injector Clean is an alcohol-free product that helps prevent fuel/water emulsions so that separating filters can safely remove water before it reaches the injectors, where it can cause corrosion.

Applications

Use AMSOIL Diesel Injector Clean in all types of heavy- and light-duty, on- or off-road and marine diesel engines. For initial use, follow the Clean-Up recommendation; use the 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.

Treat rates (16-oz, 64-oz and larger package sizes):

  • Clean-Up: 2 oz / 5 gal, 4 oz / 10 gal, 12 oz / 30 gal, 32 oz / 80 gal
  • Maintenance: 1 oz / 5 gal, 2 oz / 10 gal, 6 oz / 30 gal, 16 oz / 80 gal

Treat rates (8-oz size):

  • Clean-Up: 2 bottles per up to 20 gal
  • Maintenance: 1 bottle per up to 20 gal

Pros and Cons

Pros

  • 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

Cons

  • Premium Investment: Higher initial cost compared to conventional or "shelf-brand" synthetic oils.
  • Limited Local Retail: Primarily available through authorized dealers and specialized synthetic outlets. National Synthetics is a local stocking dealer. Call 1-678-944-8816 to confirm in-stock items for same-day local pickup.

Order Through Your Independent AMSOIL Dealer

Order AMSOIL Diesel Injector Clean through your independent AMSOIL Dealer. Preferred Customer members save up to 25% on all AMSOIL products.

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Independent AMSOIL Dealer #30576570

Shipping & Returns

Fast, Reliable Shipping

  • Free standard ground shipping on orders of $100 ($130 in Canada) or more.
  • Orders under the threshold ship for a flat $9.99 ($12.99 in Canada) freight charge.
  • In-stock items typically delivered in two to three business days.
  • U.S. and Canada only — no shipments to PO Boxes.
Read the full shipping policy →

30-Day Return Policy

  • Return unopened, currently marketed products within 30 days for a full refund (minus freight).
  • Exchange unopened products within 90 days with no restocking fee.
  • Special-order items are non-returnable.
  • Returns are handled directly by AMSOIL.
Read the full return policy →

Frequently Asked Questions

Diesel Injector Clean (ADF/ADFP) focuses on detergency and lubricity. Diesel 4-IN-1 combines Diesel Injector Clean with Diesel Cold Flow and Cetane Boost for all-season protection in one dose.

Customer Reviews

See all 144 reviews
4.9out of 5
Based on 144 verified reviews

This is all you need to clean your diesel injectors

I have a F250 that has a 6.7 and it was sluggish . I put This diesel injector cleaner in and drive it for a while . The sluggish problem cleared up. Definitely works

Verified Buyer

Much needed here in Alaska

Much needed here in Alaska

Verified Buyer — Anchorage, Alaska

Independent AMSOIL Dealer #30576570. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.