First regent on my MX4800 was at 52 hours, second was at 168 hours. Both were while mowing so I didn’t really notice except for light on dash. I try to keep the rpm’s high.
I had the same problem. Ended up i needed to relieve pressure in the line. I placed a cloth over the connection and tapped the End with a wooden mallet. The cloth kept the fluid from spraying me. The connection was easy after that.