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Diesel Products

D-T-1 Diesel Fuel System Cleaner

Premium direct injection fuel system cleaner applied through the fuel rail or installed with a new fuel filter to quickly and effectively remove deposits from the entire fuel system.

The Problem

The new electronically controlled high-pressure common rail direct injection systems (CRDI) have smaller and more precise nozzle tip holes and operate at higher pressures and temperatures making them more prone to deposit formation. These deposits disrupt the spray pattern causing inefficient fuel dispersion, poor combustion, and diminished THE PROBLEM performance. The use of biodiesel blends further increases the likelihood and severity of fuel system deposits forming in the entire fuel system, including the fuel lines, fuel pumps, injectors, and combustion chamber.

The Solution

BARDAHL PRO® D-T-1 Diesel Fuel System Cleaner is formulated to be effective in all types of diesel-powered vehicles, including those with the latest electronically controlled high-pressure common rail injection systems (CRDI). The direct application of the highly concentrated cleaning solution quickly and effectively removes deposits from the entire fuel system, including fuel lines, injectors, fuel pumps, and the combustion chamber.


  • Restores the injector spray pattern for improved combustion
  • Removes stubborn deposits caused by oxidation and the use of biodiesel fuels
  • Restores lost power, enhances performance, and decreases emissions
  • Improves fuel economy and reduces operating cost


This cleaning solution can be applied through the fuel injectors with either a diesel canister delivery system or a diesel fuel system flush machine. This cleaning solution can also be used to fill up a new fuel filter prior to installation to eliminate air pockets while cleaning the system upon engine restart. Follow the instructions of the equipment manufacturer regarding how to connect the canister or machine to the vehicle and properly use the solution to conduct a professional service. Perform this service every 30,000 miles or as recommended by a Technician. Dispose of any used or unused solution and the container in accordance with local, state, and federal regulations. 

  • Product & Size:
    34003 - 16 oz (473 ml)
  • UPC Code:
    0 76906 34003 8
  • Case Pack Qty/Wt:
    12 / 12.6 lbs