12,000 miles on Mobil 1 Formula M, and it used less than 1/2 quart. It has 134000 miles on it. I thought this was good performance.
I have been pleased with this car; I bought it with about 106000 miles from a M-B dealer.
I wonder about the newer cars: the controls and features seem so complex and I don't have much use for most of them. I do appreciate quality, though.

__________________
Providing a home for these cars:
1951 Buick Special De Luxe
1977 Rolls-Royce Silver Wraith II
1970 Rolls-Royce Silver Shadow
1986 Mercedes-Benz 420 SEL
2005 Mercedes-Benz E 320 CDI
2012 GMC Sierra 1500 4X4
1927 Pierce-Arrow Series 80
1931 Pierce-Arrow Series 43
1926 Ford Model T coupe

I believe that they're a value play, used car to buy. I too, bought an E320 CDI - an 06 from a Mercedes-Benz dealer, with ALL maintenance and parts repair records last year. For what I paid for it, I consider it a tremendous value priced bargain.

What is the recomended oil change intervals for these engines? I am about to pull the trigger on one this week.
My last diesel being an 06 Cummins 6 popper had a 7K mile interval for oil change, 12K sounds steep.
What's the concensus as far as which is the best to use for an 80Kplus mile car? Mobil 1?

Thanks

Depends on driving conditions....if a lot of freeway you can go 10k+, if a lot of city a 7-8k change might be a good idea.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

You can trust the computer montoring, it will tell you when it needs service based upon how you drive the car.

Your engine will have a specific oil spec based upon its engine and emission components. Follow it.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

My last diesel being an 06 Cummins 6 popper had a 7K mile interval for oil change,

I don't know how clean the CDI runs, but on my '03 Cummins, I change the oil at 18K miles and it's still clean. If it weren't for the fact that it's a 5/30 grade, I'd give it a second run through my signature car.

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'83 300D, 126K miles.

I did as per manufacturer's recommendations which was 7K miles. Now if it were up to the stealership service department I would have had to do it every 3K miles
You can always count on them to figure out a way to conn you out of your cash

I change mine when the service indicator says. No problems. Oil is so much better than it used to be. NO varnish nor sludge inside the engine. None. I looked, that's how.

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Providing a home for these cars:
1951 Buick Special De Luxe
1977 Rolls-Royce Silver Wraith II
1970 Rolls-Royce Silver Shadow
1986 Mercedes-Benz 420 SEL
2005 Mercedes-Benz E 320 CDI
2012 GMC Sierra 1500 4X4
1927 Pierce-Arrow Series 80
1931 Pierce-Arrow Series 43
1926 Ford Model T coupe

My wife's OM642 powered ML320 CDI says about 3.5 k miles to Service B. What does Service B entail? I think it's oil change, fuel filter, and general inspection but I am not sure.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech