[wiswind]

I have used a grease needle on my grease gun to poke into the boot and inject grease to the tie rod end joint.
There is NO grease fitting unless the factory original has been replaced with an aftermarket brand, that has a grease fitting.
One only should put a small amount of grease in......once you see any grease come out.....or the seal swell at all.....you should stop.
This method is certainly not as good as having a grease fitting, but is the only alternative when you don't have a grease fitting.
You cannot add a grease fitting to the factory original part.

That said...... if the joint is worn, it MUST be replaced.
Grease will prevent wear....but not undo it.

I am wondering if you have a dragging brake....although it is normal for the front disk brake pads to lightly ride the surface of the rotor.

I would advise that you get the vehicle in to a good shop for a inspection......
If it were my vehicle, I would schedule a front end alignment.....complete with a good inspection of the front end parts.
From my understanding, a good front end alignment includes a good shakedown of the front end.....and would most likely be a more complete check out than a quick inspection.

I do a lot of things.....myself...but some things....and this is a good example.....I trust to a qualified mechanic with the correct tools and know how.
I like to have a "safety check" done once a year....and an alignment at that time also.....or certainly every other year....if everything seems perfect to me.