The bearings on my compressor were fine. But, there was so much oil in the system when I bought the car that compressor clutch squeked at idle speed. It also was at least a 30 hp drag on the engine.

With the flushing I did, I can barely feel the compressor drag the engine. The compressor is quiet and the clutch does not slip. Now the system runs mineral oil and Duracool instead of 134a and PAG oil (I assume).

I have a new H-block. Those are difficult to put in.

It is bad to have too much oil. Oil won't cool like refrigerant.

If the low side is 40 psi, shouldn't the pipe feel like 40 degrees not like 68, and is that sign of too much oil?