Well, my theory didn't pan out as hoped. I put more fluid in the reservoir, started it up, looked back at the left side air cell expecting to see fluid escaping from the nuts at the lines to the air cell. Nothing leaking. HOWEVER, within a 15 minutes 1/2 a litre of fluid was gone.

Now i'm thinking you may be right about the pump leaking into the engine. But my dipstick is inconclusive. I turned the car off, let it sit for a few minutes and checked the oil. It appeared to be slightly overfilled, but the more time I let go by the oil level appeared to go lower, but still appears to be overfilled slightly.

What damage am I doing to the engine if hydraulic fluid is mixing with the oil? I'm not driving it until this mytery is solved.

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R Martin
Dallas, TX (Addison)

86 560SEL, 128K