That has to due with a weak pinion in the early 100 series which a locker strengthened. Nothing to do with the locker itself. Toyota corrected that issue in latter year 100 series with a stronger pinion
Didn't want to give us that tool or make it more reliable? Just curious if you have a lot of wheeling experience with and without a locker. I think you over estimate its value. But hey everyone has a personal preference and I will admit both my 200 and 40 have F/R lockers. Never once engaged the front on the 40 though. I installed it because I was rebuilding the diff and while I was in there
At worst case, you can always install an aftermarket locker. If you are willing to spend $$$ on a vehicle and then $$ to modify it with armor, then the cost of a locker is small potatoes, at least in my opinion. I am not disregarding your opinion, just saying everyone's truth is different.
I bought my 200 series in Jan 2016 with 25K miles for $52K and spent more than $20K in accessories and have wheeled the crap out of it since.
I bought my first Land Cruiser in 1979 and have many since then. One of the best was my Lexus LX450 which did great on the Rubicon in 2008. The Lexus badge doesn't bother me
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I also broke a front axle because of the locker on the LX450 on Kane Creek Waterfall