loader hydraulic noise

I am trying to figure out why there is so much whining noise from my loader. The fluid appears to be aerated. I don't know if the noise is because the fluid is aerated or the what is making the noise is aerating the fluid. I made a short video of the loader that would probably explain it better. , The sound changes when I move the bucket controls. Even just a slight movement changes the sound. The sound doesn't appea

Discuss this in the forum topic Need help with Old Michigan Loader, whining noise from hydraulics.