Diesel trucks are known for their incredibly reliable engines. At Harold's Used Auto Parts Inc in Philadelphia, we know that the key to a reliable engine is good maintenance. In fleet trucks, the difference between a truck that lasts a million miles and a truck that needs new engine hinges on how well it has been maintained.

Whether you drive a Cummins, Duramax, or Powerstroke diesel truck, there’s a good chance you’re familiar with turbochargers. Over the past couple of decades, turbos have nearly become stock equipment on diesel pickups, and are becoming increasingly common on gas vehicles as well. But what are they, how do they work, and why are they there? Harold's Used Auto Parts Inc in Philadelphia, PA has the answers.

The catalytic converter is an essential piece of equipment on any modern vehicle. At Harold's Used Auto Parts Inc in Philadelphia, PA, our team of professional technicians are able to diagnose and repair any catalytic converter issues your Chevrolet, Dodge, or Ford diesel pickup may be experiencing.

Trucks aren’t like cars...your average personal vehicle usually holds about 5 quarts of oil, and you are supposed to change it every 3-5k miles. However, the same logic doesn’t apply to large trucks. At Harold's Used Auto Parts Inc in Philadelphia, we know how important proper oil changes and diagnostics are to keep your truck on the road, for hundreds of thousands of miles. Here’s what you need to know:

When you think about diesel engines, you probably think about large trucks and machinery, and maybe a few oddball cars over the years. So how long has diesel really been around, and why is it used the way it is today? More specifically, why should you choose a diesel engine for your needs?  Here at Harold's Used Auto Parts Inc in Philadelphia, PA, we discuss this with customers often based on their unique needs along with the history of the diesel engine.

Currently, the future of electric vehicles looks promising - though it won’t likely replace your Duramax, Powerstroke, or Cummins engine any time soon. Still, we don’t know what the immediate future holds. This battle was waged once before in the past, with combustion engines taking the throne over electric power. Here’s a brief history of electric automobiles, from Harold's Used Auto Parts Inc in Philadelphia, PA.

Your Ram, Chevy, or Ford diesel pickup is a big truck. All that weight takes some strong stopping power and takes its toll on your brake pads - especially if you ever pull a trailer or carry heavy loads. Whenever you need a brake job, Harold's Used Auto Parts Inc in Philadelphia, PA has your back.