To say I was not happy upon noticing this would be the understatement of the day.
TL;DR - My rear axle housing cracked at the passenger spring perch. I've ordered a new axle housing.
I've been quite lucky when it comes to cracking - or not cracking, rather - parts fo the Tacoma. I'm sure this is partly due to the fact that I've only been using it to adventure for the last five years, but I've surely watched as others have had all sorts of problems. On this trip however, I ducked under the truck for a quick look around as I was making my way home, and noticed an oil stain on the rear axle housing, just under the passenger leaf spring perch.
I've seen this before, and the problem is that the welds on the perch were done too cold at the factory. Over time, they fatigue, and the perch begins to rip off of the housing, cracking the housing as it does.
Successful fixes have been rare, the only real solution being a new housing to replace the cracked one. So, that's what I'll do, but I'll need to find a way to patch up my existing housing until the new one arrives.
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