Idler Arm Failure

New part already installed and has 100 miles on it, everything works great. Nothing is wollered. I am going to switch to a different type of chassis lube and see what happens. I am thinking Valvoline VV279, synthetic blend multi-purpose grease with moly. It has a high working temp and is an extreme pressure lubricant.

I run Mobil One red synthetic grease in all of my front end for 16 years. Didn't help me. :-(