I Rank EVERY 2026 HD Diesel Engines BEST to WORST *Diesel Mechanic Review*

I Rank Every 2026 HD DIESEL Engine from Best to Worst as a Diesel Mechanic and discuss where I placed the 6.7L Cummins, 6.7L Powerstroke and the 6.6L Duramax **Get 25% Off all AMSOIL Products**, Sign up as one of my preferred customers here! 👉https://www.amsoil.com/offers/pc/?zo=... Your first order pays for the membership! GET 10% OFF Weigh Safe Hitches 👉https://crrnt.app/WEIG/3475nWnl Or use Code "Gettys10" at checkout! FULL Allison Video -    • Allison Is DONE With GM… And the 3.0L Dura...   Connect with me on Social Media: Instagram:   / thegettygarage   Tik Tok:   / thegettyadventures   What I Use: 6.4L HEMI AMSOIL Engine Oil - https://www.amsoil.com/lookup/auto-an... WIX Engine Oil Filter - https://www.amsoil.com/p/wix-oil-filt... WIX Engine Air Filter - https://www.amsoil.com/p/wix-air-filt... Cabin Air Filter - https://amzn.to/3JMZAHh Gear Oil - https://www.amsoil.com/p/amsoil-sever... Grease - https://www.amsoil.com/p/amsoil-100-s... Rust protection - https://www.amsoil.com/p/amsoil-heavy... What I Use: 7.3L POWERSTROKE Engine Oil - https://amzn.to/3ZLIWBD Engine Oil Filter - https://amzn.to/4gHTwRb Fuel Filter - https://www.amsoil.com/p/wix-fuel-fil... Gear Oil - https://www.amsoil.com/p/amsoil-sever... Grease - https://www.amsoil.com/p/amsoil-100-s... Towing Gear: 10 ton Pintle hitch (2.5" receiver) - https://amzn.to/3r7Axvm 7 Ton Adjustable hitch (2" receiver) - https://amzn.to/46i2iAf Adjustable Pintle hitch mount (2.5" receiver) - https://amzn.to/3RqHGS3 15 Ton Pintle hitch - https://amzn.to/45SaCqv 10,000lbs Tie Down Straps - https://amzn.to/3ZBnxeh In this video, I rank the 2026 heavy-duty diesel powertrains from best to worst, taking a close look at Cummins, Power Stroke, and Duramax. This isn’t just an engine comparison—I’m ranking the entire powertrain, because in the HD truck world the transmission plays a massive role in how these trucks perform, tow, and hold up long term. I break down what Ram has done with the updated Cummins and their move to the ZF Powerline 8-speed, why I think that transmission is a huge step forward, and how it influenced my rankings. I also talk about Ford’s Power Stroke paired with the 10R140 and GM’s Duramax with the 10L1000, including what I like, what I don’t, and where I think each setup could be better. These are my real-world impressions based on engineering, reliability history, towing performance, and overall drivability—not just spec sheets. If you’re shopping for a heavy-duty truck, or you’re just a diesel nerd like me who loves digging into the details, this breakdown should help you understand the real differences between today’s HD diesel trucks. Let me know in the comments: How would you rank them? 00:00 - Intro 01:32 - 6.6L Duramax + 10L1000 08:06 - 6.7L PowerStroke + 10R140 15:54 - 6.7L Cummins + ZF 8 speed 23:19 - Conclusion