The Diesel Podcast

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Red dye diesel was recently approved for use on public roads and people are asking - is it safe to use? Power Service joins us today to answer if it’s ok for modern diesel trucks. We also talk about three proactive steps to winterize our trucks before Winter really hits.  Learn more about your ad choices. Visit megaphone.fm/adchoices

One of the most overlooked upgrades for transmissions is the cooler itself. Fluidyne joins us today to talk about diesel transmission coolers, when an upgrade is in order, and the difference between aftermarket options. We tackle the questions of why temperatures matter, how some aftermarket coolers make the transmission hotter, and details in construction that separate a bad cooler from a great o...

Andrew at Long Range Gear chats with us about manual transmission failures, the challenge with discontinued parts, and ways he is innovating with cutting edge technology. We go over G56, NV5600, NV4500, as well as ZF5/6 transmissions and components. From case flex to synchros and fluid recommendations, this episode has it all! https://www.youtube.com/camaro72andrew Learn more about your ad choices...

There’s been online noise about a potential trucker strike on October 1st. We ask a trucker what he’s seeing and hearing on the road and from fellow truckers. Why would they strike and is it real? Learn more about your ad choices. Visit megaphone.fm/adchoices

With some 6.7L Powerstroke trucks getting some miles on them, worn out injectors can become an issue. Holder’s Diesel joins us to go over what to look for, sizing a set for your use or build, and cutting edge technology fueling their injector development program. 40% OFF KERSHAW KNIVES with code: DIESELPOD40 Discount code valid until December 31, 2026 40% off your entire cart at Kershaw Knives wit...

In a few months, the oil we can purchase on the shelves changes. Shawn Whitacre, Principal Engineer at Chevron Lubricants, joins us for an in-depth look at the changes. We also discuss how the Delo lineup is formulated for high stress areas in modern diesel engines. 40% OFF KERSHAW KNIVES with code: DIESELPOD40 Discount code valid until December 31, 2026 40% off your entire cart at Kershaw Knives...

Early 6.7L Powerstroke owners can take advantage of the improvements Ford made to the engine in 2020+ models. J&K Engines details how every 6.7L Powerstroke that leaves their facility comes with the updated steel pistons and rotating assembly upgrades seen in current 6.7L Powerstrokes. We discuss how this impacts long-term reliability and performance for those maximizing longevity. Learn more abou...

In this episode, we sit down with J&K Engines to take a closer look at the 4.5L Powerstroke - where it came from, what vehicles it was used in, the years it was available, and what made this unusual diesel different. We also dig into the engine design, including the compound turbo setup found on certain versions, and how the 4.5L compares to the Powerstroke engines most diesel owners are familiar...

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. Learn more about your ad choices. Visit megaphone.fm/adchoices

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. Learn more about your ad choices. Visit megaphone.fm/adchoices

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 Learn more about your ad choices. Visit megaphone.fm/adchoices

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...

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 happ...

Diesel injector sizing can get confusing fast. Percent over, hole size, liters per minute (LPM)—what do these ratings actually tell you, and how do you know which injectors are right for your build? Lenny Reed from Dynomite Diesel Products joins us to break down the different ways diesel injectors are rated and why comparing injectors isn't always as straightforward as the numbers make it seem. We...

Modern diesel engines generate a lot of heat, and keeping that heat under control puts a huge demand on the cooling system. But how often should you actually change your coolant, and what happens when you leave it in too long? Rislone joins us to talk about diesel cooling systems, proper coolant maintenance, and some of the common mistakes truck owners make. We discuss corrosion and contaminants t...

Not all diesel fuel filters are created equal—and choosing the wrong one could affect your truck's performance, reliability, and even the life of your fuel system. On this episode of The Diesel Podcast, we sit down with S&S Diesel Motorsport Chief Engineer Ian McGiffen to discuss what separates a quality fuel filter from the rest. We cover filter media, micron ratings, filtration efficiency, commo...

What diesel parts are actually worth buying? In this episode of The Diesel Podcast, we bring together Fleece Performance Engineering and Domestic Diesel, a California diesel repair shop, for a unique conversation about the parts they see every day and the problems truck owners face. We discuss CP3 conversions, 6.0L Power Stroke replacement cylinder heads, electrical pigtails, common diesel truck f...

Not all diesel parts are created equal. In this episode of The Diesel Podcast, we sit down with Snyder Performance Engineering to discuss the growing problem of copied and counterfeit diesel parts entering the aftermarket. We break down how legitimate American-made diesel components are reverse engineered, copied, and sold at lower prices, why quality often suffers, and what these knockoff parts c...

20% off HOT SHOT'S SECRET with code: DIESELPOD20 https://www.hotshotsecret.com/shop/ Learn more about your ad choices. Visit megaphone.fm/adchoices

A Presidential Pardon closed one chapter—but according to today's guest, the conversation about diesel emissions enforcement is far from over. On this episode of The Diesel Podcast, I sit down with Jon Achtemeier who was convicted of Clean Air Act violations, served four months in federal prison, and was granted a Presidential Pardon this July. Whether you own a Cummins, Duramax, Powerstroke, oper...

This week's guest shares his journey from working on diesel vehicles in the military to finally purchasing the Cummins truck he'd always wanted. We talk about why he chose a Cummins, the upgrades that transformed it into a dependable 500-horsepower daily driver, the parts he recommends, what he'd do differently, and the future plans he has for the truck. Learn more about your ad choices. Visit meg...

Wade LaLone of Diesel Freak shares his story on today's episode. He takes us through the day EPA officials and law enforcement arrived at his shop, the years of uncertainty that followed, his federal felony conviction under the Clean Air Act, and ultimately receiving a Presidential Pardon. We discuss the emotional toll the case took on him, his family, and the diesel community, as well as why he s...

Can you delete your truck now? Can the EPA still fine you? Did the recent EPA pardons actually change anything? In this episode of The Diesel Podcast, attorney Stewart D. Cables breaks down what the recent EPA pardons actually mean for diesel truck owners, repair shops, tuners, and the aftermarket industry. We separate fact from fiction and explain what changed, what didn't change, and what you sh...

If you own a 6.7L Cummins, this is an issue you need to know about. In this episode of The Diesel Podcast, we talk with a professional diesel shop owner about the Cummins grid heater bolt failure, why it happens, what damage it can cause, the warning signs to watch for, and the repair options available before it becomes a catastrophic engine failure. ➨ BECOME A PATREON: https://www.patreon.com/the...