Now that you mentioned it, I looked at the Toyota Owners site and the PS flush at 108k was one of 4 times its been to the dealer for maintenance lol. So unless another flush was done independently, that means that the old fluid was just really gross ATF. That particular time at the dealer was the "vital fluid analysis", so it got PS exchange, Trans flush (not exchange, but everything is going okay), diffs, tcase, throttle body cleaning, and spark plugs. Pretty sure I'm the third owner, and the POs did an okay job with upkeep. I'm documenting everything it has done, both at a shop and in my driveway, in a binder with receipts and details on the service completed.