I change oil and filter every 5k miles with Mobil 1 synthetic 15w whatever's available. I've changed it every 5k since I bought it with 110k miles on it. I also rotate tires with each oil change. I disabled my egr a very long time ago.

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

I get 30-33 around town, and 36-38 on the highway. Even when driving 60 all highway, coasting when possible, windows and tire pressures up, and gentle acceleration, I did not break 38 mpg.

I could drive all city, with a heavy foot and still never get below 30. NEVER! And with that engine you are almost always driving with a heavy foot.
Just smooth as silk, plenty powerful, and amazing on the fuel mileage. The OM606 with the turbo must be an awesome power plant. Too bad it's surrounded by the W210.......

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Hey! For a while there I actually liked the W210 body styling better than the W124. I'm finally slowly starting to come around to the W124.

I think the W108/109 was probably the best looking Mercedes ever, unfortunately it went away before the turbo-diesel passenger car engine came about.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.