With today's superior oils, I do not see any reason to at least run the vehicle to MB's recommended mileage/time interval. For the '95 E300, I'm going to 7500 miles or one year....whichever comes first.

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-- Chris

'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991