How much water % is allowed in Hyd Oil , used in Excavators?

Answer:
Well, any water in your hydraulics will cause you problems, including corrosion. And if your running the unit hard, you might cause the water to turn to steam. My suggestion would be to have your hydraulics flushed and replaced if you have water in it.

None, it will destroy the components in there.

The answers post by the user, for information only, FunQA.com does not guarantee the right.