Thanks for the information. No significant leaks like yours but thought it was strange to have enough pressure when not running to push whole machine up onto its back end.Your tilt going down after sitting some time is probably your tilt cylinders by passing at the piston inside the cylinder or leaking oil at the wiper sleeve on the rod.I say this as I purchased a Bobcat T300 this fall, 4,000 hrs., & noticed when it was parked for a week or two that the tilt would slowly go down. The machine didn't have any noticeable leaks sitting outside & around the cylinders was just a 'misting' of oil, just enough to catch the dust....nothing unusual.
Well this winter we've had a lot of snow & some cold temps in west central Alberta so I thought I would park the machine in my warm shop. That's when I discovered the leaks on my cement floor. Oil spots on my floor drives me NUTZ! Mostly from the rod wiper seals. I am currently just finishing up putting all seals in all four cylinders together & installing. Also will make a few new bushings & new joint pins for all connections. Before I fire up the machine I'm going to suck the oil out of the hydraulic tank & clean anything at the bottom, then change filters & add fresh oil. I have filtering systems as mentioned above & may run the used oil through them before judging whether to use the used oil again.
Something else to work on after correcting major water in oil problem.
Maybe time to shell out $80,000 for a brand new Mustang! A person can always dream!