I can't stand the noise any longer, I am taking the car this afternoon to George Gantner. He is listed in the Good MB Shops, Cleveland, OH area.
I will let everyone know what he thinks.

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1987 300D 146K Original #14 Head
One eye on the road, the other on the temp. gauge

Gone But Not Forgotten
1983 380 SEL Long gone
1983 300SD Wish I hadn't traded it in on a 90' Corvette
1989 300SE My all time favorite
1995 E420 Went like a bullet