Why Your 4WD Truck Only Spins TWO Wheels (And How to Fix It)

I Test out my 4WD system in my truck and show that 4WD LOCK only spin 2 wheels. I explain why this is and how torque flows through a 4wd system. Lastly we tackle how to spin all 4 wheels with the brake trick. The BOOK - The Ultimate Guide 👉 http://goodideacreationsllc.pxf.io/zzgQD8 Promo Code: GettysGarage10 **Get 25% Off all AMSOIL Products**, Sign up as one of my preferred customers here! 👉https://www.amsoil.com/offers/pc/?zo=31309211 Your first order pays for the membership! Connect with me on Social Media: Instagram: https://www.instagram.com/thegettygarage/ Tik Tok: https://www.tiktok.com/@thegettyadventures What I Use: 6.4L HEMI AMSOIL Engine Oil - https://www.amsoil.com/lookup/auto-and-light-truck/2022/ram/2500-pickup/6-4l-8-cyl-engine-code-j-esb-j/?zo=31309211 WIX Engine Oil Filter - https://www.amsoil.com/p/wix-oil-filter-wixoil/?code=57060-EA&_gl=1*1nha42k*_up*MQ..*_ga*MTgxMTYzNzYwNi4xNzQ3MzM4Nzgz*_ga_E8P3KK8JV8*czE3NDczMzg3ODIkbzEkZzEkdDE3NDczMzg4MDUkajAkbDAkaDEwMjA1MDcyMDc.?zo=31309211 WIX Engine Air Filter - https://www.amsoil.com/p/wix-air-filter-wixair/?code=46930-EA&_gl=1*h9vgr7*_up*MQ..*_ga*MjAzNTkzNzEyLjE3NDczMzgyMDA.*_ga_E8P3KK8JV8*czE3NDczMzgxOTkkbzEkZzAkdDE3NDczMzgxOTkkajAkbDAkaDY0ODQzNDY3OA..?zo=31309211 Cabin Air Filter - https://amzn.to/3JMZAHh Gear Oil - https://www.amsoil.com/p/amsoil-severe-gear-75w-90-100-synthetic-gear-lube-svg/?_gl=1*it5o9x*_up*MQ..*_ga*NDgxNjkwMDUxLjE3NDc0MDExNzQ.*_ga_E8P3KK8JV8*czE3NDc0MDExNzMkbzEkZzEkdDE3NDc0MDExODQkajAkbDAkaDE1NTc0MzUzOTE.?zo=31309211 Grease - https://www.amsoil.com/p/amsoil-100-synthetic-multi-purpose-grease-glc/?code=glccr-ea&_gl=1*hp8cr9*_up*MQ..*_ga*MjAzNjEzODc5Ny4xNzQ3NDAxNDg3*_ga_E8P3KK8JV8*czE3NDc0MDE0ODYkbzEkZzAkdDE3NDc0MDE0ODYkajAkbDAkaDU5NTEyMTc4NA..https://www.amsoil.com/p/amsoil-heavy-duty-metal-protector-amhsc/?code=amhsc-ea&_gl=1*10x1frk*_up*MQ..*_ga*MTkzMjMyOTA3OC4xNzQ3MzM5MTQz*_ga_E8P3KK8JV8*czE3NDczMzkxNDIkbzEkZzAkdDE3NDczMzkxNDIkajAkbDAkaDE4OTQwMDEyNDg.?zo=31309211 Rust protection - https://www.amsoil.com/p/amsoil-heavy-duty-metal-protector-amhsc/?code=amhsc-ea&_gl=1*10x1frk*_up*MQ..*_ga*MTkzMjMyOTA3OC4xNzQ3MzM5MTQz*_ga_E8P3KK8JV8*czE3NDczMzkxNDIkbzEkZzAkdDE3NDczMzkxNDIkajAkbDAkaDE4OTQwMDEyNDg.?zo=31309211 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-filters-wixfuel/?code=33817-EA&_gl=1*hx3uv5*_up*MQ..*_ga*MTQxMzc5MjkxMS4xNzQ3NDAxOTA0*_ga_E8P3KK8JV8*czE3NDc0MDE5MDMkbzEkZzAkdDE3NDc0MDE5MDMkajAkbDAkaDMyMzA0OTY2OQ..?zo=31309211 Gear Oil - https://www.amsoil.com/p/amsoil-severe-gear-75w-85-100-synthetic-gear-lube-svl/?code=SVLPK-EA&_gl=1*hka7u4*_up*MQ..*_ga*MTY5MjU2MjE4Ny4xNzQ3NDAxNzM2*_ga_E8P3KK8JV8*czE3NDc0MDE3MzUkbzEkZzAkdDE3NDc0MDE3MzUkajAkbDAkaDI5MTA4ODEwNQ..?zo=31309211 Grease - https://www.amsoil.com/p/amsoil-100-synthetic-multi-purpose-grease-glc/?code=glccr-ea&_gl=1*hp8cr9*_up*MQ..*_ga*MjAzNjEzODc5Ny4xNzQ3NDAxNDg3*_ga_E8P3KK8JV8*czE3NDc0MDE0ODYkbzEkZzAkdDE3NDc0MDE0ODYkajAkbDAkaDU5NTEyMTc4NA..https://www.amsoil.com/p/amsoil-heavy-duty-metal-protector-amhsc/?code=amhsc-ea&_gl=1*10x1frk*_up*MQ..*_ga*MTkzMjMyOTA3OC4xNzQ3MzM5MTQz*_ga_E8P3KK8JV8*czE3NDczMzkxNDIkbzEkZzAkdDE3NDczMzkxNDIkajAkbDAkaDE4OTQwMDEyNDg.?zo=31309211 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 00:00 - 4wd Only spins 2 wheels? 05:41 - Open Differential Explained 06:19 - Brake Trick ?? 09:33 - Limited Slip Differential Explained Most people think that when you lock a truck into 4WD, all four wheels are guaranteed to spin. That’s not how it works. In this video, I put my Ram 2500 Power Wagon on ice and show exactly what happens when you engage 4WD Lock. Even with the transfer case locked, only two wheels spin — one on the front axle and one on the rear. Why? Because the transfer case only locks the driveshafts together. The differentials are what actually determine which wheels receive torque. I break down how open differentials behave when one wheel has less traction, how a helical limited slip works, and why the “brake trick” can sometimes force torque to the wheel with grip. We’ll follow the torque path step by step so you can understand what’s really happening under your truck. If you love real-world 4WD testing and mechanical explanations, this one’s for you. @HungryMindsArt