Hirnbeiss, Yes, tire pressure is checked regularly (also tips from the forum) I put 32 Psi on the tires.

Actually the code P0400 (something with EGR) came up once then I replaced the EGR tube and it's gone for some months but once in a while it resurfaces although it can be erased every time. At the moment I don't have CEL and I just scanned yesterday with no code.

Ed, I use only premium gas.

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE