We have a Carefree P55012 on our Rockwood 1980. The first time we raised the roof everyone in the surrounding campsites took notice along with us. I'm not sure how loud the older lift motors were but perhaps the lack of the big wad of grease around the mechanism has an effect. Just completed the annual maintenance and, according to the info online at Roberts Sales, there wasn't much to do on the power lift itself. Also used the maintenance thread on this forum from a while back complete with pictures and instructions. It was a huge help. F5Moab was the source I think.
We're considering some sort of sound proofing under the cover to muffle it. It's somewhat comforting (I think) to hear ours is not the only one.
2014 Ram 1500 Crew Cab 5.7L, 3.92 gears, HD cooling, etc
2015 Rockwood 1980