Installed a sanden and charged it. Worked great and then two weeks later the belt is squealing and making noises like the R4 was prior to me nuking that thing.

I know the sanden has an internal oil reservoir. But I charged the system with oil and then freon. The charge was an 8 oz can and 2.2lbs- ish of 134A. Pressures looked fine according to Colin (we used his tools).

So is it possible I overcharged the system with oil? My Benz guru suspects either a blocked condenser or overcharged with oil.

Thoughts?