Changing Hydraulic Oil

[steamer]

Guys just a little suggestion. If the oil comes out of your equipment looking that bad your looking for big trouble down the road.
That oil is the life blood of any hydraulic system big or small. The dark coloring is metal fillings from your pump eating it's self up.
Never, never leave it till it's that color. Cleanliness is of the utmost importance!.
You should change it at least once a year and maybe more if there's allot of dust in the air.
Even pouring oil strait from any container is bad. It should all ways be filtered on the way into the tank. Had to replace a pump once, because there was plastic that somehow made it into a brand new container.
The oil that came out of Gregs machine is the way you want to see it in the container, still looking pretty clear, That way your pump and cylinders are going to be happy. Any other way and the grit is tearing up your o-rings and the pump gears even if you have a filter.
Rob