Someone told me the other day that drivers should always turn off their car
or truck's A/C BEFORE shutting down its engine. He said that this would lead
to longer compressor life. I had never heard of this before and was
wondering if this is even true. Anyone out there know of a good reason 'why'
turning off an automobile's A/C compressor just before shutting off its
engine would make it last longer? I couldn't think of a good reason myself.
Now I CAN understand how not running the compressor very much at all would
lengthen its lifecycle. That's obvious there.

Thanks in advance for any A/C-related expert advice.

Ron M.