Best grease to use in sealed ball joints?

[Trav]

I took out my bmw control arms to replace the bushings, and would like to add some grease to the ball joints. They are the sealed type but I can easily insert a grease needle next to the tapered shaft.
I'm thinking marine grease since it's less likely to leach out and be affected by water?

What gives you the idea it needs more grease? This type of LFL joint needs very little grease to live more than 20 years, adding grease through the boot on top of the ball does not really do much for it. If the boot gets damaged its time to replace otherwise leave them alone, the boots always appear empty on these, it is normal.

http://www.dulub.com.tw/brochure_01-to-64/pdf_English/57_eng-HighPerformanceBallJoint.pdf

Klüber Introduces New Greases for Automotive Applications

Klüber Lubrication recently introduced a new high-performance automotive grease for ball joints and a low-friction grease for constant-velocity (CV) joints. Klüberlub HE 71-281 incorporates …

www.machinerylubrication.com

 

[Dave9]

Are we even sure it is a petroleum based grease instead of silicone? It probably has a plastic bushing in it...