Diesel produces more smog than gasoline, study says

| October 24, 2012

Diesel engines produce nearly 15 times the amount of one of the main ingredients in smog than gasoline-powered engines, says a recent study by the University of Cal-Berkeley. The study was in part funded by the ...

Navistar, Cummins reach engine parts agreement

| October 22, 2012

Navistar and Cummins have finalized an agreement in which Cummins will supply Navistar with parts for its SCR system.

10 rigs of Halloween: Seasonal, eerie and just plain scaryImage Gallery

| October 19, 2012

As part of Overdrive's 13 Days of Halloween — a slideshow featuring 10 trucks of Halloween.

A miracle in Joplin

| October 19, 2012

Debbie Zehrer tells the exceptional story of her encounter with young truck illustrator Chase Harnage at the 2012 Guilty by Association Truck Show at 4 State Trucks in Joplin, Mo.

Hino, Cummins, Paccar top power rankings for medium-duty engines

| October 18, 2012

Class 5, 6 and 7 truck engines and transmissions were rated in J.D. Power's U.S. Medium Duty Truck Engine and Transmission Study of vocational application models.

CARB ‘sends message’ with enforcement blitz

| October 18, 2012

California's Air Resources Board throughout the month of August held a statewide inspection blitz in which it checked more than 4,000 trucks for compliance.

Another fall view, with truck!

| October 17, 2012

Learn how to share your fall pictures with Overdrive here, with a view from reader Guy Broderick.

What thinner oil means for you

| October 16, 2012

Next-generation low-viscosity oils will boost fuel economy, but durability could suffer.

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