[Clydja]

I have recently gotten a twenty ton Tradesman log splitter. What type of hydraulic fluid should I use?

[crigby]

Hi,
Since Duerr has been bankrupt for awhile, try getting the brand of the pump and find out the recommendations from that manufacturer. It will most likely have multiple recommendations. Since you are not supposed to mix oils, try to ascertain what is in it, or drain and start anew.
Peace,
Clarke