Originally posted by csnow
I cannot be certain in the case of your Euro, but 1983 was long after hardened seats were implemented in the US.
Unleaded gas began in 1974, I believe. In 1978 it was mandated for imports, if I remember right. Anyways, are you sure your seats are soft?
That is what I am trying to find out. The official local MB reply was to change them, implying that they are soft.
Presently I am still using lead substitute, although the gas I am using is 98 RON and should ameliorate the problem somewhat. However, I do think the problem of seat recession is real and not imaginary.
1983 w126 280se
1983 w123 200