My AC compressor has been leaking for at least a couple months now, and has seemed to have gotten worse. I am about to take it (the Accord in my sig) on a 8 hour trip tomorrow, and then 8 hours back two days later. Its about a 900 mile round trip. The majority of the driving will obviously be on the highway, so as far as helping the AC compressor is it better to keep it off/or on to help it get as far as possible. I was just thinking, I wonder if the constant cycling of the compressor for 8 hours at highway speeds will wear it out earlier, or if its better to leave it on. I know very little about AC systems.