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hydraulic oil

  1. Focus Group
    The label near the hydraulic fill says winter 5w20, summer 20w40. Is this to be strictly followed and is this correct. I have a Ingersoll 446, B43M16hp, 1994. I just want to do it right. Recommendations? Thank you! Norman :roll:
  2. Case Colt Ingersoll Tractors
    I need to change my hydraulic fluid in my Ingersoll 4023 for the Power take off system. I bought some xtreme Pure-Flo Hydraulic Fluid but it does not state the weight. It's specs imply it will be a good fit for mid range viscosity requirements. Anybody using this oil? Any comments pro or con...