Congrats!! This is encouraging for me. I have a '94 E320 Coupe with 184,000 on her and runs smooth as silk. Though I do occasionally get a little slipping in the tranny when it shifts from 2 to 3rd when leaning on the gas. I "bypass" this slippage by lifting off the gas for a moment, letting it shift into 3rd and then get back on the gas.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member