I have a JD 4310 with front mount snow blower. Last night I was working it very hard for a few hours and saw some fluid on the snow so I stopped and looked under the front near the lift ram. I saw some fluid dripping but could not tell from where as it was getting dark. I got it home in the garage and started it up to take a look. I could not get it to repeat. I took it back out and blew for another hour watching for leaking and it did not. Is there a relief blow valve that might have gave way? Thanks for help. Wax.