While running my splitter this weekend, I noticed that the fill plug on the tank had a lot of hydraulic oil shooting out of the breather hole. It only happens when the ram is fully retracted (when it hits the end and auto stops). I took the plug off and ran it like that. When the ram hit the end, oil would shoot out but then be fine. This isn't the first time I've used it and have a few cords run through it.