I have a leak on the bottom of an Eaton Hydro. Its fan cooled with fin and the pump motor all in one. The control linkage goes up through the bottom and that looks like where the oil is coming from, probably a seal. This is a 94 Toro 724-Z, Model 74140 Ser 49000. Its that mower Wheelhorse copied off of Dixie. I'm selling this unit this spring for under a thousand. Before I discovered the leak my mechanic told me I could go with a heavier oil 40 or 50weight and maybe get a little more life out of it to stop blow by. I was wondering If there was any easy or partial fix for that seal leak with out taking the pump off the mower and taking it apart or something?