Thanks.

Does anyone have any knowledge about the hose down by the rear axle that I was alluding to?

I will probably have it checked out by a reputable mechanic if I decide I am serious about the purchase, but want to gather as much information as possible before doing so. I guess my main concern is that minor oil seepage/leakage up by the oil pan, but my old 1990 Lexus LS400 also had this appearance and it NEVER dropped below the "full" line on the oil stick between changes, so this may not be a big deal.

He keep assuring me not to fret about the timing chain on the 500, because it has a "dual" chain and he has never heard of one breaking on these, unlike the 380, but I am not familiar with Mercedes cars.

Thanks again for the advice.