What is DPF?
DPF (diesel particulate filter) treats your truck's exhaust by trapping particulate matter which is basically soot and ash. Diesel particulate filters have been a crucial part of a truck's emissions system. DPF's capture approximately 90% of diesel particles and soot preventing them from being released through the exhaust system.

Benefits of a clean DPF include:
Cleaning
The DPF must be cleaned every 150,000 to 300,000 miles to remove the built up ash. The filter should also be cleaned if a fuel injector or turbo problem causes contamination with engine oil or non-combusted diesel. This contamination cause unwanted back pressure. Cleaning methods include air blasting, de-ionized water and a vacuum-like system. This must be done very carefully to avoid any damage to the filter. The particulate matter that is removed must be handled with extreme caution to ensure there is no exposure to the very fine contaminants.
DPF and Preventative Maintenance
The DPF is yet another component that must be tracked and maintained on a heavy duty truck. Ensuring regular preventative maintenance is performed on the DPF will do wonders in ensuring the long life of the DPF. Replacing air filters and fuel filters regularly along with using the correct type of oil for the engine will help prevent any unnecessary wear and potential damage with the DPF.
How can I tell if my DPF is causing performance issues?
Look for signs like frequent regens, decreased power, high fuel consumption, or white/blue smoke. These often point to DPF clogs, EGR malfunctions, or SCR issues. Regular diagnostics and DOT inspections can catch problems early.

We take responsibility for the quality of work we do. As mechanics, we know that every job needs to be done to 100% the best of our abilities. From quick turnaround times to efficient EOM and aftermarket parts sourcing to education and recommendations. Each and every Specialized Truck Repair shop believes in and operates by these standards.
Learn More






We pride ourselves in putting our customers first. Our mechanics know the importance of treating every vehicle like their own.
Heinz Krahn
Very good service. Recomend it for everyone. They're treating you how you treat them. I had a power steering hose blown up. They came in change it in was back on the road in a short time. Thank you guys very well done.
Derrick Woulard
They did a great job very knowledgeable and special thanks to Dustin Tyler and TJ keep up the good work I highly recommend this repair shop.
Lee Neal
Hands down the best shop in the West Memphis/ Olive Branch area. I handle Road Side breakdown issues for a fleet of 500 trucks and anytime I have a truck in that area I always steer clear of the T/A and Petro and route to Angels Truck service. Great Service, Great Prices and home town hospitality like no other.