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Any idea what could cause slow hydraulics? All hydraulics are slow

Any idea what could cause slow hydraulics? All hydraulics are slow. Tilt, Side shift, Lift and even when Lowering.

I checked the pressure on the delivery hose connector, and it is correct based on manual, at 2,500 psi. I also drained all the hydraulic oil, and filled it in with new 10 gallons. The old oil was dirty and dark red, please see second picture.
https://imgur.com/a/ta1H2Rc

It is a 2012 Mitsubishi FG30NGLE
Serial number: AF13G00114
Thanks!
  • Posted 11 Feb 2025 03:08
  • By Matt_Steveson
  • joined 11 Feb'25 - 1 message
  • Minnesota, United States
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One of the possible symptoms is if it manifests itself to a significant extent when the oil is cold, there may be a disturbance in its flow (saturated filter, foreign body in the intake line - part of the valve, damaged O-ring... and the like), mechanical impurities or disturbed controls. It is also important whether the problem arose increasing intensity or at the moment... Do the pressure check at min. 60 degrees Celsius
  • Posted 15 Feb 2025 01:14
  • By kole
  • joined 17 Jan'25 - 1 message
  • Serbia
...and it can always be better...
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Fact of the week
At the opening ceremony of the Sydney Harbour Bridge in 1932, marching bands were instructed to walk out of step as they crossed the bridge. This unusual directive was given as a precaution due to concerns about the bridge's structural integrity during its early use.