The Diesel Podcast

John Muldoon from Muldoon’s Performance Transmissions joins us to talk about the biggest problem facing 68RFE’s in 2026. And it’s not what you think. He also tells us common mistakes that happen with transmissions and how we can avoid expensive repairs.

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Salty Box Racing set a new diesel record and the team joined us from the track! We go behind the scenes at Speed Week 2026 and learn about their Cummins, challenges in the environment, and the thrill of competing at these intense speeds.

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Are some factory engines beyond hope and just need a different engine entirely? Diesel Conversion Specialists joins us to take an in-depth look at all Cummins engines, which make the best swap candidates, and trucks that can benefit most from the conversion

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Glory Days Speed Shop is back on The Diesel Podcast to talk about the latest updates to the Thunder Muzzle and the idea behind giving diesel truck owners control over their exhaust sound.

Want an aggressive diesel exhaust when you’re getting on the throttle, but something quieter when cruising down the highway? We talk about how the adjustable muffler is designed to offer both, what’s changed with the latest version, and what they’ve learned from getting the product into the hands of diesel owners.

We also get into the story behind Glory Days Speed Shop—from developing an idea and launching a new diesel product to growing the company and figuring out what comes next.

If you like the sound of a straight-piped diesel but don’t necessarily want to live with it every mile, this episode is for you.
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Power Service joins us to talk about biodiesel and what diesel truck
owners need to know about the fuel going into their tanks.

Biodiesel can offer benefits, but it can also create new challenges for
your diesel fuel system. We discuss how biodiesel can contribute to
microbial growth, fuel contamination, storage issues, and additional
maintenance concerns that truck owners may not realize are happening
inside the tank.

We also cover what biodiesel blends mean for modern diesel engines, how fuel quality can affect filters and other fuel system components, and
what owners can do to help prevent fuel-related problems.

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