Stop KILLING Your Transmission! The Maintenance MOST People Ignore (With NextGen Engineer)

Become a member (Support this channel):    / @thecarguyonline   NextGen Drivetrain: https://nextgendiesel.com In this video, I sit down once again with Nate from Next Gen Drivetrain, one of the most knowledgeable and outspoken transmission engineers in the industry to answer your top transmission questions. You submitted dozens of questions across the channel, and Nate tackles the most common, most misunderstood, and most controversial topics with his trademark clarity and brutal honesty. We cover everything from GM vs Ford 10-speed failures, feed-limit valve design flaws, pulse dampener deletion, and the truth behind “lifetime” transmission fluid… all the way to torque converter shudder, bore wear, cooler myths, and which modern transmissions actually deserve the title of “reliable.” Nate explains why so many OEMs design transmissions with parts that don’t need to exist, how neglected fluid turns into “liquid sandpaper,” why certain 8-speeds and 10-speeds fail early, and what owners can realistically do to extend the lifespan of their trucks. Whether you drive a Tundra, Silverado, Sierra, F-150, RAM, Durango, Tahoe, or any modern vehicle with a 6-, 8-, or 10-speed auto, this video will give you real, practical insight from someone who rebuilds these units every day. If you’re considering upgrades, if you tow, if you daily drive a high-mileage truck, or if you're just trying to avoid a $7,000–$12,000 transmission bill down the road… this Q&A is a must-watch. Drop more questions in the comments for a Round 2! 00:00 Intro 00:13 Why does GM Transmission have more issues than Ford 02:41 Should Transmission Fluid Ever Be Changed Lifetime Fluid Myth 11:33 Are Modern Transmissions LESS reliable because of complexity 14:23 Whats the Best Half Ton Transmission in the past 20 years 17:33 Whats the best transmission in a brand new truck today 19:49 Thoughts on GMs 8L90 and 8L80 Have they Improved 25:35 Is GMs new 3rd Generation Valve Body Better than Previous Gens 27:40 Should HIGH Mileage Transmission be Serviced or Left Alone 28:38 What should owners do to improve longevity on Brand New 10 speeds from Ford and GM 30:51 Are Ford 10R80 unites actually reliable with aftermarket valve body kits 33:26 Are OEM Coolers sufficient or should you add external coolers 37:06 How serious is Torque Converter Shudder and what causes it 42:39 What are the Top 3 most reliable trucks from 2000 to 2020 gas and diesel 44:08 Will the GM 2500 and 3500 improve or get worse now that Allison pulled their name 45:57 What does it mean to delete pulse dampers or feed limit valves in valve bodies 50:12 Thoughts on Bore Wear in 8 and 10 speeds from GM and Ford