Maintenance
Signs Your DPF Needs Professional Cleaning
The warning signs that a diesel particulate filter is loaded beyond what regeneration can handle—and when to plan a professional cleaning.
Read guideMountaintop field notes
DPF Cleaning Resources for Diesel Owners & Fleets
Straightforward answers about soot, ash, regeneration, professional cleaning, maintenance intervals, and filter replacement—written for the people responsible for keeping diesel equipment working.
Fundamentals
DPF Cleaning vs. Regeneration vs. Replacement
Understand how regeneration, professional cleaning, and replacement differ so you can choose the right path for a loaded diesel particulate filter.
Read guideOperations
Why Short-Haul and Idle-Heavy Trucks Load DPFs Faster
Duty cycle has a major effect on how quickly a DPF loads. Here is why stop-and-go and idle-heavy work is hard on diesel particulate filters.
Read guideFleets
DPF Maintenance Planning for Fleets
A practical framework for fleets to schedule diesel particulate filter cleaning, track filter history, and reduce unplanned downtime.
Read guideFundamentals
What Ash and Soot Do Inside a Diesel Particulate Filter
Soot and ash behave very differently inside a DPF. Understanding both explains why cleaning is a distinct maintenance step.
Read guideLocal
A Columbia Gorge Diesel Owner’s Guide to DPF Health
Local terrain, climate, and duty cycles shape DPF wear for Gorge diesel owners. A practical guide for White Salmon, Hood River, and The Dalles.
Read guideCosts
How Much Does DPF Cleaning Cost? Cleaning vs. Replacement Prices in 2026
Typical 2026 prices for professional DPF cleaning and for a replacement filter, what is and is not included, and how to keep diesel particulate filter costs down.
Read guideMaintenance
How Often Should You Clean a DPF? Setting the Right Cleaning Interval for Your Diesel
There is no single mileage that fits every diesel particulate filter. Here is what actually sets a DPF cleaning interval, what shortens it, and how to build a schedule around your truck.
Read guideCompliance
Is Deleting a DPF Illegal? What Diesel Owners Should Know About Delete Kits and Tuners
Removing or disabling a diesel particulate filter on a road vehicle violates the federal Clean Air Act. Here is what the law says, the current penalties, what changed in 2026, and what a delete really costs.
Read guideSeasonal
Winter DPF Problems: Why Cold Weather Clogs Diesel Particulate Filters and How to Prepare
Cold starts, long warm-up idles, and short winter trips are hard on a diesel particulate filter. Here is what goes wrong in winter and how to get your truck ready before the cold sets in.
Read guideFuel Economy
Cut Diesel Operating Costs: How a Clean DPF Lowers Your Fuel Bill at $6+ Diesel
A loaded diesel particulate filter quietly costs fuel through backpressure and extra regenerations. With diesel above $6 a gallon, here is what that costs and why maintenance now pays for itself.
Read guideStart with the complete cleaning process
See how inspection, measurement, thermal treatment, pneumatic cleaning, and verification fit together.
Explore the DPF cleaning process