rustystud
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I've kept my proverbially mouth shut on this issue so far, but there is some really misleading information out here. I have worked in the HEAVY TRUCK/ EQUIPMENT repair field for over 36yrs. now as a "ASE' certified Master Mechanic .(just to show my credentials) Most of that time was gear repair (transmission, differential, transfer case). I have seen the results of a locked differential on a large truck (the spiders broke and jammed) and it was not pretty ! The truck lost control and crashed. There is a reason manufacturers put differentials in vehicles ! On the trail, great no problem if you like to throw dirt and mud around, but on the road you need the axles to be able to rotate at the different speeds of the inner to outer wheel or you will loose road contact with one of the wheels , ie wheel spin . As far as axles breaking due to load shock, yes if you drive full throttle like a maniac you will have axle shock and breakage. I personally don't drive like a raped ape and have never broken an axle, and yes I drive offroad. In fact I drove offroad before it became a "thing to due" fad. About "lockers" I have no problem, if there used in the right situation. I have replaced a lot of axles due to "lockers" grabbing when a driver would accelerate in a turn, and a lot of "U-joints" too. Don't get me wrong, "lockers" can be a life saver in a wet, muddy, slippery situation when you need that traction, but that is not on average a daily occurrence. I myself like "air lockers" or "electric shift lockers" since you apply them only when needed. Your tires and drivelines and U-joints and steering linkages will love you for it ! So now all you young bucks with your "personal" experience can start to flame me .