On another note, I did not see if you posted the hours you put on so far. I have only 49 hours on my 3510 SE HST. I have found lots of bolts that have backed off. Left front wheel lug nuts, all loader frame bolts, the little 10mm retainers on the loader bushings, the range selector flex fittings.... I did change all oils at 43 hours including the hydraulic oil that was used elsewhere. Surprising amount of very, very fine and shiny metal in both hydraulic and engine oil. Refilled with 5 gallons of Kubota UDT 2. The loader bolts were loose after I moved about 200 yards of dirt. In only 49 hours I went through a tube of grease on the loader. Installed a flail mower today that was a PIA getting the clutch end to slide onto the mower gearbox. After about 3-4 hours of grinding, sanding and checking, it went on. Mower was a brand new
WoodMaxx 62". I did pull the seat and bypassed the gear neutral switch to allow starts and stops without shutting down the engine. I found that the biggest PIA on this tractor. None of my tractors have had it and in some ways, it is more hazardous having it then not especially if you live on a slope. You still have to be in the seat and the brake on, that's fine, but neutral on a slope, the second you let off the brake you are free wheeling as opposed to being in gear and slow wheeling. Much to finicky on the "N" to start or get off the tractor while it was running. Glad you got this hydraulic leak figured out.