Average life span of AC compressor?

I have a 4.6 liter engine, 104,000 miles, the AC works, engine is in a Lincoln. Wondering what the average life span is on Ford AC compressors? I try to run it with just the vent/AC off when possible. I think the retired lady who had it before probably ran the AC most of the time in the warmer weather.

I bought an 1997 Oldsmobile 3.8 liter V-6 years ago, the AC bearings were grinding themselves up at 124,000 miles, replaced the whole assembly, then the unit started acting up again 7 years later at 164,000 miles when I foolishly drove it with the refrigerant leaked out, probably did not get lubed because of that, hard lesson.

Since the 4.6 liter is such a common engine, does anyone know how long you can go before the AC compressor needs to be replaced, on average?

Thanks.

We have replaced them anywhere from 40,000 miles to some 2001 models we have that the compressor has never been replaced. So it is just a crap shoot as to when it will fail.