OK Update.

This technique (shoving grease into the CV Joint using screwdriver) does not work.
The slight clanking sound is still there, it is a minor sound for now. I will do it the correct way later: removing the driveshaft from the X5.

- The key thing is how to get grease into the "fore" portion of the CV Joint.
- If you look at the typical BMW DS CV Joint, the balls in the cage work in the same way as an axle of a FWD car.
- The problem is: the space "fore" of the balls is limited and the amount of grease in that space is small. With time, the grease liquefies (all grease does that with time/mileage) and flows out of that small space to the "aft" portion of the CV Joint, thus the clanking sound when you switch from reverse to forward: this happens as the balls are thrown in different directions without enough grease ---> clanking sounds.

- Not a big deal, as the CV joint is about $180, if you need to replace it, then replace it. On youtube, there are a lot videos showing you how to replace it. This happens as people ignore the clanking sound for a long time, such as 30K-50K miles of ignoring the sound.
- But if you take good care of the DS Rear CV Joint by greasing it every 125K-150K, it will last the life of the car.


Options:
1. Maybe if you can design a syringe with a 90-degree hard tube (such as a bent small copper pipe) that allows you to inject grease into that tight space.

2. Remove the DS and do it the proper way as I did in my 1998 528i.

Attached Images

 

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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT