That's a good question. We just bought a Parkliner
(in Oct '16) with a Fiamma 45 crank out awning
, I went to the Fiamma website and pulled up the instructions.
After wading through five langages ... I found no mention of lubrication.
If the joints and pivot points are plastic on metal, It might be best to avoid and lubricants. They can just collect dust. Dirt and oil makes a grinding compound that can make things wear faster. Perhaps a good cleaning with clear water and an dry with an air gun to dislodge any dirt...?