Why This 3.0 Duramax Took a Week to Tear Down & Lower MPG with additives?

In this episode of the 3.0 Duramax Podcast, I share what happened when I started tearing down a 3.0 Duramax engine and discovered four completely seized injectors. What should have been a straightforward teardown turned into a week-long battle involving penetrating oil, sledgehammers, cutting injectors apart, and eventually removing the cylinder head with the injectors still attached.We also discuss an important change to the 2026 Silverado and Sierra transmission cooler, answer 10 viewer questions, and cover topics including turbocharger failures, fuel additives, towing practices, oil drain plugs, fuel system concerns, and more.Whether you own an LM2 or LZ0, this episode is packed with real-world information from the dealership and the shop.🔧 Topics Covered:• 2026 transmission cooler changes• 4 seized injectors on a 3.0 Duramax teardown• Turbo cooldown after towing• LZ0 turbo failures• Fuel additives and fuel economy• Magnetic drain plugs• Tahoe/Yukon buying advice• Engine replacement vs resealing• MOTUL oil update• OTA update code P2002• Metal flakes in fuel filters📞 Have a question for a future podcast? (801) 209 9503Leave a voicemail using the number in the description or post your question in the comments.🌐 Duramax News:https://duramaxnews.com🛒 Parts & Upgrades:https://demonworkshop.comDiscount Codes:Banks Power - DemonWorksWeigh-Safe - DW10🎥 Subscribe for more 3.0 Duramax content, tech breakdowns, maintenance tips, and dealership insights.#Duramax #30Duramax #LM2 #LZ0 #Silverado #Sierra #Tahoe #Yukon #DieselTruckTimestamps00:00 Intro01:12 2026 transmission cooler changes03:05 My 3.0 Duramax teardown nightmare begins04:25 Four seized injectors discovered06:35 Upcoming LZ0 teardown and thrust bearing inspection07:40 Viewer Question #1: Archoil and fuel economy11:05 Viewer Question #2: Should you cool down the turbo after towing?14:05 Viewer Question #3: Turbo failure at 33,000 miles17:15 Viewer Question #4: Magnetic drain plugs and the new 2026 oil pan20:15 Viewer Question #5: Best Tahoe/Yukon years with the 3.0 Duramax22:00 Viewer Question #6: Engine reseal vs engine replacement24:05 Viewer Question #7: MOTUL oil update and oil analysis plans25:10 Viewer Question #8: P2002 OTA update issue and dealership charges26:20 Viewer Question #9: Metal flakes found during a fuel filter change27:35 Final thoughts and viewer questions