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Infographic titled “Average Diesel Fuel Prices: July 2026” featuring a fuel nozzle, a line chart of rising on-highway diesel prices, and a regional bar chart showing price changes across U.S. regions with directional arrows.

News•Wayne Parham•July 29, 2026

July Diesel Trends Update

The average price of a gallon of diesel increased again this week, and the EIA reported a new national average of $5.31 at the start of the week.

Graphic asking whether the EPA will eliminate DEF-related engine deratements, featuring a DEF fuel sign, a federal government building, and bold headline text highlighting potential changes to diesel emissions regulations.

News•News/Media Release•July 13, 2026

EPA Proposing Plan to Save Truckers $12 Billion by Revising Biden-Era Rule & Eliminating DEF Deratements

A U.S. Environmental Protection Agency proposal seeks to revise emissions compliance requirements enacted under the previous administration and eliminate DEF-related deratements completely. The public comment period is open now.

Paccar engine displayed alongside Kenworth and Peterbilt logos and a DEF pump sign, illustrating a software update addressing diesel exhaust fluid (DEF) inducement strategies for select heavy-duty trucks.

News•News/Media Release•July 8, 2026

Paccar Updates MX-11 and MX-13 Engine Software to Enhance Customer Operations

Kenworth Truck Company and Peterbilt Motors Company will update software for vehicles equipped with Paccar MX-11 and Paccar MX-13 engines to ensure they comply with EPA guidance on diesel exhaust fluid inducements.

American Truck Simulator quick job menu showing available freight routes, truck options, and a map of the western U.S.

News•Lauren Fletcher•July 8, 2026

Volvo VNL and VNR Electric Join American Truck Simulator

Volvo’s VNL and VNR Electric are now in American Truck Simulator, bringing diesel and electric truck models to virtual drivers.

YouTube thumbnail featuring Lauren Fletcher of Work Truck on the left and Sarah Booth of WEX on the right. Large text in the center reads "Mixed Energy Fleet Tips" with "Energy" highlighted in bright green against a dark blue background. Work Truck and TruckChat logos appear at the top, with speaker name labels at the bottom.

Videos•Lauren Fletcher•July 7, 2026

Mixed Energy Fleet Tips for Balancing EVs, Gas and Diesel Vehicles

Mixed energy fleets are becoming the new normal. Learn how fleet managers are balancing EVs, gas and diesel vehicles while controlling costs and planning for the future.

Infographic titled “Average Diesel Fuel Prices: June 2026” featuring a fuel nozzle, a line chart of rising on-highway diesel prices, and a regional bar chart showing price changes across U.S. regions with directional arrows.

News•Wayne Parham•June 30, 2026

June Diesel Trends Update

The national average price of a gallon of diesel has dropped again, this week by more than 16 cents. All five regions reported lower average prices, ranging from almost 13 cents to more than 28 cents cheaper than a week ago.

YouTube thumbnail featuring Lauren Fletcher on the left with the headline "Fleets Need People." Supporting text highlights AI, leadership, technicians, and fuel savings, promoting Work Truck's June 2026 monthly fleet news recap.

Sponsored•Lauren Fletcher•June 26, 2026

Fleet Talent, Leadership, and Smarter Operations Take Center Stage This Month

This month's TruckChat: Top Monthly News Recap explores why people remain fleet's greatest competitive advantage, from leadership development and technician recruitment to flexible fleet strategies, fuel-saving driver habits, and the growing role of AI in everyday operations.

News•News/Media Release•June 19, 2026

DTNA to Equip Vehicles with Updated DEF Inducement Software

Daimler Truck North America is equipping its Detroit engines with updated software reflecting the U.S. Environmental Protection Agency’s (EPA) revised guidance on diesel exhaust fluid (DEF) inducements.

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.

News•Lauren Fletcher•June 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.

Bold pink and black graphic with large distressed text reading “Where Are the Women Techs?” highlighting the shortage of women in diesel technician roles.

Articles•Heather Sullivan, The Pete Store•June 9, 2026

Where Are All the Women Technicians? Closing the Gap with Support and Career Pathways

Women make up just 4% of diesel tech roles. Here’s how trucking can attract, support, and retain more women in the shop.

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