Ty sheepfoot for the response. No this was a Craigslist buy. The hydraulic oil is green in color. Should I change it? Are you saying that there is an air conditioner in this unit?The 88 series was a good machine, strong and powerful. They are a case poclain machine, and are still made and sold in other parts of the world but not in the us. They needed a radio and a/c for the us market and the only optional equipment at the time was a longer dipper stick and a extra single hyd group. There is still two working around here along with a 888 and a 1088. I would change your lube in the swing box and final drives, it takes 135-H EP gear lube in both swing 2.0-3.7 QT depending on s/n and finals around 1.75 QT per side. The hyd system (tank) holds around 21-26 gal with the oil blue in color (poclain oil) with all the anti-wear additives. The price does not sound that bad for the pins and bushings. Other than the engine there is not many after market parts out there, most hoses are four wire on that machine also in the main hyd system. A good parker hose dealer with metric fittings and others can make your hoses if needed. Was this the machine with the mag and gen that was for sale up north a few weeks ago.