Thanks for the replies guys. I feel pretty good about the two year oil change interval with the kind of miles I'm driving those cars. Just wanted to make sure I wasn't missing something.

Lee - I agree, but I've got too many cars and not enough miles to go around. My 240D for example I'm lucky to have to fuel it up once a year. It's my recycling and Home Depot "truck."

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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles