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Doing my tie rod’s and seen this little leak, 2 hours before I cleaned it cause I needed to get a part I forgot. So the pic is 2 hrs after cleaning, should I be worried? You’ll see the oil on the bottom of course. Thanks !!
Is that under the passenger axle? If so, I believe that's a power steering fluid line. I as slowly losing power steering fluid over the course of a few months, and found this and just tightened it. Solved the leak issue. I'd also look at your power steering fluid level, and check for leaks around the whole PS system. At 125k miles my PS pump was leaking too so I rebuilt that and replaced all the orings needed for the lines as well.
It does seem as though that is oil just under the tie rod (red circle). I'm not sure why the tie rod would have oil there. Maybe it dripped down from the engine (Although the tie rod is far back of the engine). Is that an aftermarket tie rod? Mine looks different, mine looks like it would have grease under the boot (see second image).