The electric motor belts are made out of different material. Mine quit squealing when I put the electric motor belt on. Used to start squealing at 2200 to 3000, now doesn’t squeal at all. However, I don’t know what the durability / lifetime of one of the 3L belts is on a car.
Interesting thing is that it never squeals under load when steering with any belt. I don’t understand what the real cause of the squeal is. If I had a pressure gauge I could watch the power steering pressure, but don’t have one.
