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Graphic from Questar Auto Technologies showing a chart that links persistent diagnostic trouble code (DTC) activity with increased idle fuel consumption. The chart highlights periods of high-impact DTC events and elevated fuel use over time. Accompanying text states that aftertreatment issues can drive higher idle fuel consumption and contribute to excess fuel costs for fleets.
Newsby Lauren FletcherJune 11, 2026

Questar Analysis Finds Aftertreatment Degradation Can Cost Fleets Up to $30 Per Vehicle Per Day in Excess Fuel

Questar analysis found degraded DPF and SCR systems can waste up to $30 in fuel per vehicle daily, creating significant avoidable fleet operating costs.

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Closeup of hand touring bottle of DPF cleaner into a fuel tank.
ProductsMay 13, 2025

6 Signs Your Diesel Vehicle’s DPF Needs Cleaning

Learn when to clean your car, truck, or SUV's diesel particulate filter, plus other helpful DPF tips from Rislone.

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ProductsOctober 7, 2019

Flash Cleaner Extends Life for DPFs, DOCs

The Flash Cleaner Machine utilizes a combination of air, liquid, and thermal cleaning processes.

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ArticlesMay 9, 2019

How Changing Emissions Standards Affect Work Truck Fleets

Many industries are making it a priority to reduce greenhouse gas emissions, as national standards and public expectations continue to change. The work truck industry is among those most affected by this push.

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ProductsAugust 20, 2018

Dorman Launches HD Solutions Catalog

Dorman’s newest catalog includes full images for every part, a complete index and a fold out ABS Sensor buyer’s guide poster.

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Articlesby Les SmartJuly 5, 2018

How Not to Hate Your Diesel Particulate Filter

Understanding manual and on-road regeneration, how to keep them clean, and when to replace them will reduce the hassles associated with diesel particulate filters.

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ProductsApril 3, 2018

Aftertreatment Replacement Filters

Denso's PowerEdge line of diesel particulate filters and diesel oxidation catalysts covers light- and medium-duty Ford, GM, Sprinter, Dodge, and Ram trucks.

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ProductsJanuary 31, 2017

PowerEdge Emissions Control Products

Denso Products line of PowerEdge aftermarket emissions control products includes diesel particulate filters and diesel oxidation catalysts.

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Articlesby Sean LydenJanuary 2, 2014

The Latest Trends in Medium-Duty Truck Maintenance

How current and future challenges are affecting medium-duty fleets.

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NewsJune 21, 2012

Fleet Financing Available for Diesel Emissions Retrofits

VENTURA, CA – Clean Diesel Technologies, Inc., a cleantech emissions control company, has partnered with AIL to offer leasing solutions for Clean Diesel's ECS-branded DPF retrofit solutions to vehicle fleet owners and operators across North America.

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