300,000 views just before the New Year! Thank you!!

By far this is the most comprehensive yet simple explanation of different differentials. Thank you, Ben.

What a professional! No errrs n' aaarrrrs, no derailings, just perfect execution of message. Subscribed!

THE best off road differential description ever. This presentation doesn't go overboard with sponsor support. 100% mechanics, installation, application and engineering. AWESOME video. Thank you!

I've come back to this video multiple times over a couple years. Amazing video.

Had a Detroit style locker before in a light vehicle. Annoying to drive both on road and off road. On road it was the worst if not being driven correctly. It would lock in a tight turn if letting off a little on the gas or started to engine brake. Needed to keep a certain amount of power or freewheel else it would lock up shaking and unsettling the car with screaming tires. Off road one felt there was lot of play in the system when in rock or uneven terrain. Very jerky because the wheel has to turn a little before power would be transmitted in the opposite direction. Every time the car would get over to the other side of a stone it would move an extra foot rolling before engine braking worked because of the huge slack in the system. It worked best when driven "hard" because then it would always behave like a spool.

Still relevant and full of good info 6 years later. Thanks!

I've been offroading for over 30 years, I have never seen a better explanation of different style traction devices!

Finally understood how TOR SEN diffs work. Thank you.

I wish all UKposts videos were this good. Heck, I wish any UKposts videos were this good. Thanks, Ben.

Thank you Ben! I was sold on an Eaton e locker but after watching this video I am seriously considering an ox Locker now.

Bela explicação, muito obrigado! Optei pelo e-Locker.

An excellent presentation! Using ARB lockers in my Ibex, but fascinating to see how the other variants work. Hope you have a good 2018.

Very thorough, thanks for sharing your knowledge!

You did a great job explaining and really seem to know the products your selling. Based on this video, I would definitely give you my business!

This is by far the best discussion on this topic I've seen anywhere. Thanks for doing it.

This is the BEST comparison/explanation of all similar videos on UKposts

The best, most concise and clearly articulated presentation on this subject that I have ever seen. I’ll subscribe for more of this type of quality content.

This is a really incredible video. One of the best I have seen on UKposts for any subject. I just want to add that we have front/rear ARB lockers with 110K miles on them, and zero issues except for a melted plastic air line that was replaced with a stainless steel line. No leaks, no icing, etc. We can air up our 2 gallon ViAir tank (110PSI) and the ARB compressor won't trip (90PSI) for ~6 days. With front and rear locker *engaged*, and the Jeep parked, the compressor won't trip until ~3 days. Without the ViAir tank (we have a shut-off valve on the supply hose), the ARB's tiny manifold/tank will hold pressure for over a day before the compressor trips, and about 12 hours with the lockers engaged while parked. Note that we don't typically leave the tank aired up due to condensation and such. Anyway, thanks again for the awesome video.

Saved this video a good while back when I was hard looking for a non-open diff for my truck. Finally got around to watching it and you have earned at least a sub, like and comment. Great explanation on lockers and all their varying flavors! About to go check your website for inventory availability.

Great video! Best explanation on UKposts of what a locker is, the different types and how each works, and pros and cons of each.

Great video, really explained, especially for all us diy 4wheelers.Much appreciated keep up the good work.

That was probably the best explanation of differentials I have ever seen thank you!

If anybody is wondering why there aren't many vids on this subject, it is because of this video! ....very informative and very professionally done. Nothing beats a well presented, well constructed vid when broaching this sometimes confusing subject. Well done and many thanks.

Ben, I cannot begin to tell you what a benefit your videos have been to me as I roll up my sleeves and take on the restoration and modification of my '76 Ford Bronco. Your manner is clear, concise, logical and very easy to follow. You make a potentially intimidating amount of information easily understood. HUGE thanks to you for that! Now, a request for some advice: Both my mechanic and his parts supplier have been recommending to me that I install the Yukon Zip air lockers instead of the ARBs which I had initially requested. My choice of ARBs was based on what I sensed was a general consensus (from browsing the many boards available on the web, and not insignificantly your own stated preference) that ARBs were the superior product. My mechanic has installed the Yukons in quite a number of Bronco builds (his specialty), and his parts supplier makes the argument that in addition to the cost savings of Yukons over ARBs, they've seen far fewer issues over the last number of years with the Yukons coming back after installations than they have with ARBs. Also, apparently the warranty on the Yukons beat out ARB substantially (though one could rightfully argue that a superior warranty is completely worthless miles away from the road following a catastrophic failure). I respect my mechanic and his experience, and I am a little apprehensive of taking the parts suppliers advice due to his obvious bias as a Yukon dealer (he can get the ARBs, but does not generally carry them). So, my question to you: if you were me, how hard would you fight and how much push back would you give on this issue? Is the internal composite cage a significantly weak link in the system to be of concern? You've been reassuring in the video regarding both products, gently stating your preference for the ARB. And I'll take it for granted that my mechanic will be attentive during the installation to be sure it is done properly and competently. I am a relative neophyte, and to me there is value in establishing my trust in my mechanic (which I generally have), it's just that an air locker is a substantial expense and a really difficult part to swap out. Just looking for your 2 cents. Again, many thanks!

Great Video! I sent an Email question to Ben. Excellent explanations. Almost like going back to trade school. Air Lockers where just coming on the scene but in the farm tractors we have had them for years at that point. The rest were being used in automotive applications

*Excellent video! I had no idea there were so many different types of differentials. I've worked with lots of simple open diffs and used to think they were pretty clever, but what you have there is absolutely ingenious. It's amazing that people actually came up with such elaborate designs. I almost want to buy one just to sit on my coffee table so I can admire it... that's mechanical art!*

This is the best video I have ever seen that describes every type of differential completely. It may be long but extremely well done and worth every minute to watch. Thank you for taking the time to do this. It had just the right amount of detail about each type to make them easy to understand but not confusing. Very well done.

I stumbled into this video, and am very impressed with this gentleman's ability to clearly explain this subject for 30 minutes. I've subscribed without yet knowing what else the channel contains.

Excellent video.....clear, concise, and easy to follow. Thanks for posting :)

Love my Detroit Lockered Dana 60, it's got my old 3/4 ton 2wd in and out of places where open diff 4wd fear to tread. Decent street manners too.

I agree with so many others on here, this is the best explanation that I have ever seen. Thank you guys for putting this together! I hope that you continue to create more content like this.

Both diffs just exploded in my jeep tj and this demonstration is way better than a thousand forums and hours of research. Looks like a torsen unit is going to be a perfect differential for my personal needs.

fantastic video this is the best demonstration of the different differentials I've ever seen really really good video thank you for taking the time to do such a great job to educate the public five stars to you

Well done, informative vid. I like the 'real world' addition of the welded spiders. In 50+ years, I have never seen anyone who makes money selling aftermarket parts be as real as that. If I was still building toys that break parts, you'd have my biz. Good on ya'

Clear, informative, unpretentious and very helpful. Top notch. Thanks..

Thank you. It was sooo nice to see everything laid out so clearly. Great information. If this is your channel (clearly explaining things in a fact based way) I'm subscribed.

At first I thought it was gonna be a long vid and im not gonna finish it, but when i kept watching I found out that this is The Best Differential break down on the internet! Thanks ben

Ben, that was spot on and a perfect video!! Thank you for taking the time to explain each set up. Plan on an Ox Locker in the rear of my Jeep. But was stuck on what to do up front, until I watched your video!! Very informative indeed. When I'm ready to order, after this video, I'll purchase from you!

Dude, my brain was growing and growing with each beaut of an explanation you gave and then right at the very end my brain exploded 🤯. So worth it tho, the fragments with come together as needed. Thanks man 🤘

By far the best detailed, unbiased differential explanations I've seen. I was already leaning toward the Eaton True Trac's front and rear in my street and trail 2000 XJ, this presentation confirmed that for me. Thank you for doing such a great job!

Great VID. We have started showing this to our clients so they understand what they are getting when they buy a locker. Mike Walsman JeepFix West Jordan, UT

Thanks, that was the best explanation I've heard.

Great explanations. Coming from the world of Miatas where it's just open, Torsen or clutch style diffs to the offroad world, it's was very confusing at first.

Thank you that was the best presentation on lockers learned a lot. I’m leaning more with E lockers, thank you vary much.👍👍

now thats a video I am looking for.. GOOD JOB

I literally have probably only taken the time to leave one or two comments on a video in my entire 10+ year UKposts career, and after being glued to this video from start to finish, I feel compelled to offer my sincerest gratitude for this thoroughly comprehensive overview. If only you had a tutorial for any/everything anyone ever wanted to learn about, would probably be the biggest lifehack of all time.

Thank you so much for that information i did not know that much and want very educational to me about what kind I need to go with for me to start off roading/4X4ing etc.. for my first time ever I had just bought a Jeep Wrangler Sahara unlimited 4 door 6 speed manual transmission marrone burgundy color it is my first Jeep I owned but went with my father as a little child up to the age of 8 maybe even 10 but I loved it and wanted to continue but coming from a poor family and ruining my life early on in my life it is hard to get it back but I finally have gotten myself to where I want to be and now trying to get up the right gear for what I love and being on disability is even harder than I expected but now that I seen this it is a little bit of time easier for me to get there so thanks again for your time and consideration and help you had given me more hope

That was the most clearly explained definition of differential types I have ever heard, and I have been rebuilding rears, trans & engines since 1976! Well Done my Man!!!

This is the best explanation on the tube. Gracias.

Great info mate, cheers. Wish I had found this before I suffered through hours of contradictory videos. Subscribed.

I knew very little about diff's before this vid. Great detail without being long winded and the practical demonstration helped to bring it home.

This guy does an excellent job explaining diffs in.a very clear and practical way Great job.

OUTSTANDING PRESENTATION BEN! SUBSCRIBED! THANKS!

The best locker/diff information video I have seen.

Hands down the best video I have found on information on differential traction modifications! When I get money saved up for a truetrac, I'll keep your website in mind for my purchase!

I understood all this but watched in its entirety just because it's so well presented. Thank you!

Excellent description of the Eaton Truetrac. I agree, it is a brilliant mechanical design. It’s worth noting that they can make a “pop" or "boom" when unlocking...especially on dry pavement in a tight turn. I thought I broke something the first time I heard it.

this is by far the best explanation on the plant!! thanks .

Stellar video! Thanks much. Tell people without a limited slip or some kind of mechanism like a torsen you really just have one wheel drive.

Wow, great video. I have been thinking about Ox or ARB in my Bronco and the in depth explanation has really given me a lot to think about.

Great vid. I’m just confused now, didn’t know that exist so many diffs any lockers for my old 98 Hilux 🤨

great explanations... brilliant

What else are you so knowledgeable about. You are a real pro at explaining. I'm so grateful for your ability to convey the info correctly and your effort to make all the info comprehensive. I almost want to become a technical mechanic. Thanks.

This has got to be the most thorough explanation of difflocking options. Really helpful

Just reached 200,000 views! Thank you all for the support and your feedback! We have more videos like this coming out soon so make sure to subscribe to our channel. Cheers!

I've seen several videos on this subject, this is by far the best of all, thank you very much for sharing, I took the liberty of sharing it on my group page... hope you don't mind.

I know it's already been said, but WOOWOOOWWWWEEE!! This was the most thorough, complicatedly simple description of THE DIFFERENTIAL and DIFFERENTIAL LOCKERS, that I have seen!! AWESOME JOB!! Thank you very much!!

great video mate! I only knew of Open, LSD and selectable before watch this, learnt a lot. Cheers.

You are the greatest explainer ever! I want to ask you how everything works!

Actually I have trained my dog to engage and disengage my Ox locker on command. He is also a good navigator unless he loses concentration if he spots a pretty bitch on the trail. Seriously though, this is by far the best analysis video of the different forms of differentials that I have ever watched. Good job.

To clear up some common misconceptions about differentials (also found in this video, to some extend): An open differential always splits the torque of the input shaft 50/50 between the output shafts. A Torsen (TorSen = Torque Sensing) differential never locks up. It changes the TBR (torque bias ratio) from 1:1 (open differential) to something else. F.e. a torsen differential with a TBR of 3:1 will output 3 times the torque of the faster wheel on the slower spinning wheel. That's why torsen differentials aren't great in really bad conditions. If one wheel slips on a really slippery surface like ice or hangs in the air, the torque it takes to spin it is nearly 0. Meaning the other output will be driven with 3 x 0 = 0. Clutch pack based LSD overcome this problem with pretensioning, which provides a given torque differential that has to be overcome before it allows slip.

This explanation was utterly FANTASTIC!!! Clearly explained and easy to understand. VERY well done!

One Ox manual locker, please.

Dang that ox locker is awesome. I just put in a Eaton e locker though.

Great video 6 years later thanks.

Wow, thanks for making a great, informative video. Your channel deserves more subs!

The OX can be locked by air, electric, mechanical, or the drive away lock. That's four options while being just as tough and costing less than an ARB.

Yes this video is long , but well worth the time spent.

...WOW!!!!! THANK YOU, BEN, VERY MUCH, FOR YOUR EXCELLENT EXPLANATION, AND DEMONSTRATION, OF THESE VITAL "DIFFERENTIAL" MECHANISMS!!

I really appreciate the time and effort you put into explaining all aspects and type. Really helped clear my head and narrowed down y choices. My JK is about 75% road and 25% offroad. Good job and thanks!!!

I think a Candy Machine Maker invented the True Trac idea.. Being the owner of Walter Trucks . The Detroit Locker Detroit True Tack I think they have been bought out is why the name has changed over the years.. I had one in the rear axle of a Tandem axle Truck .. It helped not to get stuck but was a real pain in the road.. You have to let off on the gas pedal to get it to unlock not so good when you are pulling a loader on a trailer up a steep drive and pulling into traffic and turning .. With a Detroit Locker only the wheel on the out side of the turn breaks loose and free wheels.. thus if you are under power it won't disengage which would cause the front wheels of my truck to slide sideways while turning ..

My dad has a 2005 Silverado 2500 HD with G80 and it has 200k with no issues and still locks up fine.

I wouldn't consider it too long at all. Without doubt the best video on the topic I've ever had the privilege to watch. Thank you.

Probably the most rational and clearest definition and explanation of how these things work. I'm not a mechanic but I now I understand

The Harrop/Eaton lockers (at least for the 80 series land cruiser) no longer disconnect between front and rear.

Thank you for all the great and clear info !

By far the most comprehensive and clear explanation on lockers. I have not mechanic experience and understood all. Great Job. Tks

Best video I've seen. Question for you about the torsen. My application is endurance road racing on tracks like Sonoma. I understand that when you are going around a corner with no throttle, the torsen allows the wheels to spin at different speeds. My question is, if I begin to throttle in the corner, will the torsen continue to allow the wheels to spin at different speed, or will it effectively become a locked dif. I have used a friction LSD and experienced significant single wheel spin exiting corners even after replacing the clutches. I have also used a Mini Spool (because I don't trust the bearings in a c-clip eliminator kit to last an endurance race with a full spool). I have much better grip and acceleration out of the corner with the mini spool, but experience significant understeer and increase in front tire wear as a result of the rear tires wanting to continue in a straight line. FYI, this car never sees public streets. Thanks again for the great video.

HOLD IT! At 4:09 - the small clutch pack. "Very similar to what you would find in a MANUAL transmission..." I'm certain you intended to say AUTOMATIC transmission. OK. Carry on. :-) Good job overall. I remember the Eureka moment I had in 9th grade when I had a differential cutaway I could play with and finally see it for myself. It's very difficult to comprehend without one in your hands.

Amazingly informative video that covers a really needed explanation on a topic that not so many covered so well!

Absolutely love this video very informative knew nothing about this subject and now I feel I have a grasp on it not good enough to teach it myself or nothing but I understand the concepts so thank you for the education good sir

So I could run a spool on my front diff on a tacoma, since I have Manual warn hubs, which means I can disengage my axles from front diff at the wheels when I don’t need 4x4. Would this be a good cheaper option for me????

I’ve got Eaton E-lockers front and rear, and I wish I watched this video first before getting them because I would have went with Ox lockers front and rear instead.

At last, someone who knows what they’re talking about and presents it in a way that’s easy to understand. Brilliant!

I've watched many videos on this subject, this is by far the best. You absolutely know what you are talking about, thank you!

I want a torsen installed on my tacoma. . what kind of shop would you recommend?

Wish someone made a 35 spline (detroit) locker for a 12 bolt. I have a spool now for drag racing and it works but it's pretty hard on parts given the two 180 degree turns at my drag strip.

The best and most thorough explanation I've seen

I know this is an older post, but WOW! I've always been very mechanically inclined, but never really understood how diffs work. I do now, Thanks!