My dad has a 1994 sl600. apparently the suspension as far as I have been told is hydraulic.

His car had problems with it sitting too low. He had to have it repaired. I am not sure what happened, but his car drives great and drove great even before.

I'll do the test you have done and let you know what I find on his car. I'll also try to find out what they did to the hydraulic system. IT could be hydraulic pressure is building up too much?

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U