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DPF Cleaning Service

Why Use DPS Automotive For Proper Maintenance Of Your Filters?

DPS Automotive was established in 2006 and is conveniently located in the North Bethesda / Rockville area in Maryland,  Our goal is to help customers define their objectives and maximize their use of our services to get the most return for their dollar. Whatever your goal may be, DPS Automotive has extensive knowledge in providing you with the right information. Honesty, integrity, and exceeding our customers expectations are the values we aim to provide.

What separates us from the competition? 

  • Local pickup/deliveries within a 50 mile radius

  • 24 hour turnaround time

  • Stage 3 cleans on ALL filters using state of the art equipment (no shortcuts! ) 

  • Competitive pricing

  • We clean and service nearly all DPF and DOC in the market today

  • Sensor bung repairs/replacements available in-house if needed 

  • Gaskets/Clamps in stock for most applications

  • Fleets welcomed!

Please do not hesitate to                             us if you have any questions or would like to get your DPF serviced at DPS!

Now you maybe asking what is a DPF?

What is a Diesel Particulate Filter ( DPF ) and Diesel Oxidation Catalyst  ( DOC ) ?

DPF stands for Diesel Particulate Filter. It is part of the emission controls of a diesel engine. A DPF works in conjunction with the oxidation catalyst and EGR valve to remove a majority of the NOx ( nitrogen oxide), particulate matter and unburned hydrocarbons from burned diesel fuel. Soot is a natural byproduct from the combustion of diesel fuel. Inside the DPF is a porous honeycomb structure that catches the soot as it passes through. After the soot builds up over time, the onboard computer controls fuel injection to allow unburned fuel to enter the filter at measured intervals where it flares off and generates increased temperatures that incinerate the

accumulated soot.

DOC stands for Diesel Oxidation Catalyst. The DOC is the first device in the after treatment system.  It is a flow through filter that contains precious metals to start the oxidation of hydrocarbons, carbon monoxide and unburned fuel and oil. Both the DOC and the DPF are honeycomb ceramic filters.

Why Proper Maintenance of Your DPF & DOC is critical!

Accumulated soot creates back pressure that will eventually lead to increased regeneration down time, loss of horsepower, reduced fuel economy, filter damage and, ultimately, engine damage.


Improper care of your DPF & DOC could result in:

  • Engine malfunction or breakdown

  • DPF warranty to be voided

  • Hefty fines due to your diesel vehicle engine to be non-compliant with air pollution laws ( EPA )


Proper care of you DPF & DOC would result in:

  • Increased fuel economy

  • Increased performance & horsepower

  • Reduced emissions (CO2 & NOx reduction)

  • Less downtime

  • Fewer regenerations

  • Longer DPF life

  • Lower maintenance costs

  • Maximized cleaning intervals

What Is The Recommended Interval For Diesel Particulate Filter Cleaning

The interval for Diesel Particulate Filter cleaning varies between manufacturers specification, engine condition, duty cycle, and type of lube oil used in the engine. Most manufacturers recommend cleaning the Diesel Particulate Filter once per year or about every 1000 hours of engine operation. In some cases, the required cleaning interval may be much shorter.  Diesel engines which idle a lot or travel short distances such as school buses require maintenance more often than a truck which operates mostly on the highway. We recommend scheduled maintenance clean of the DPF & DOC every 1000 hours or 100K miles.  



12070 Parklawn Drive
North Bethesda, MD 20852
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