My JD 6400 was blowing hydraulic fluid out of one of the lines to the cooler. There’s 2 steel lines in front of the cab and rubber lines are clamped to it. At first I thought a plugged breather, but once I cleaned that end up, I filled with oil, and it seemed that once it got warm it blew the hose off again. I just changed both the filters, filled with oil and ran good. While I was putting tools away, it must have warmed up, and after running for 10-15 minutes, it blew the hose off again. Oil is too expensive to blow on the ground, so is there any other avenues to look at before I try again?