Firsthand issues with new V6 bluetec motor?
The motor is now four years old in the states and six years over in Europe so some issues should be coming up already.
I'm trying to make the decision between a 2007 E320 Bluetec vs the 2006 E320 CDI and have only found speculation about the issues of cast iron sleeves within the aluminum block.

I think you will find that the differences will boil down to whether you prefer using Adblue or run flat tires.
The motor is now four years old in the states and six years over in Europe so some issues should be coming up already.
I'm trying to make the decision between a 2007 E320 Bluetec vs the 2006 E320 CDI and have only found speculation about the issues of cast iron sleeves within the aluminum block.

I sold my E320 CDI ONLY due to I couldn't drive any more in cold, a lot of snow climate ...
The motor is now four years old in the states and six years over in Europe so some issues should be coming up already.
I'm trying to make the decision between a 2007 E320 Bluetec vs the 2006 E320 CDI and have only found speculation about the issues of cast iron sleeves within the aluminum block.
The secret is regular coolant changes ,regular oil services & driving within their capabilities.
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Iron block, aluminium block, who cares. Just drive the Benz and watch the miles roll by.
By the way, my goal on this ML is 500,000 miles.
414,000 more miles to go!!!!!
"Another provocative issue deals with cylinder sleeves. Sleeves refer to the metal ‘tubes’ sometimes used to line the cylinder walls. Cylinder sleeves are most often used to provide a longer wearing lining made of a more wear-resistant material such as cast iron in an engine block that is cast from a lighter weight material such as aluminum where the friction of the moving piston would wear out the relatively soft aluminum.
What is tremendously interesting here is that when this 3.5 liter engine first went into production Mercedes determined that in the event the engine was ever to need rebuilding, the installation of cylinder sleeves “is not permissable.” (Source: 602/603 Service Manual). There is nothing necessarily troubling about this position; it simply most likely reflects an engineering analysis by Mercedes that installation of cylinder sleeves, which requires the boring out of the cylinder to a diameter sufficient to accept the outside diameter of the sleeve (here, from 89.0 mm to 92.5 mm) risked damage to coolant or lubrication passages, the wall between adjacent cylinders, or anyplace in the engine block immediately adjacent to the cylinder where insufficient material might be left.
However, after this engine was in production Mercedes did an ‘about face’ on this issue, advising in Technical Service Bulletin 01/32, issued in August 1994 on how to install cylinder sleeves in any 603 engine, including the 603.97x. “In the event of an engine rebuild, cylinder sleeves may be subsequently installed in these engines.”"
I dunno about you, but that doesn't sound like it becomes scrap metal...
I don't get why you are so hard pressed against the new engines for not using cylinder liners.
Last edited by jctevere; Feb 11, 2011 at 11:25 AM.
No adblue system.
I agree that is does not drive well in snow conditions, whether it's the E chassis or choice of tires (Kuhmo Ecsta LX platinum, have over 37k on them now -very usual for this tire class).
I ditched the orig Michelin's because they were loud, and really sucked in the rain - online reviews agreed with these observations.




Except people who care about the environment and a vehicle's useful lifespan.
Thus perpetuating America's (well deserved) reputation as resource hogs.
You won't see it. The service rating for that engine is only half that. Go check the figures of commercial vehicles using it.
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2) Which is why I drive a modern computerized Clean Diesel as opposed to that classic you drive?
3) Really?? Have you been to China recently?? I have. Don't confuse "resource hog" with affluence. I tend to keep what I buy unless technology improvements are worthwhile.
4) Why? I will just drive it myself and find out. Commercial vehicles usually aren't driven by the owners.








It's also in the G class. So it's in the following models now: C, E,S,CLS,ML,GL, G and Sprinter.
http://www.topspeed.com/cars/mercede...c-ar85698.html
That's a lot of trust for such a piece of crap motor. Let's be honest here, mercedes has put out one truly crappy diesel engine in the last 30 years, and that was the 6 cylinder they used in the 350SDL and S350 D in the late 80s and early 90s. They used that engine for a very brief period. Once the problems were obvious, it was gone. The V6 has been around since about 2003. It's only been in the states since 07, but I haven't read of any engine related problems on any forum. I'd say it's biggest problems are compactness (turbo in the V) which makes routine maintenance more tedious.
BTW, I used to have an 84 300SD for about 6 years, so I'm fairly familiar with their diesel offerings.
With the OM648 (inline 6) there are injector, glow plug, and EGR issues reported with some frequency on the forums.
Our 2006 got one new injector while still under warranty and the dealer billed MBUSA $750 for the part.
Inherent with the V6 is the 7-speed transmission, and it could bring more issues than the 5-speed attached to the OM648 and for sure the engine.
The "cylinder sleeve" thing is a red herring--none of the gasoline engines can be sleeved either. NOBODY NOBODY NOBODY buys cars these days expecting to run them forever and therefor nobody sells them. These are high performance Autobahn burners, not trucks.



Would love to hear about it.

