Merc Bluetec asks for Low Sulphur diesel only..Is this 100% True? Or else what? - Page 2 - Mercedes-Benz Forum

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post #11 of 15 (permalink) Old 03-07-2009, 12:19 PM
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I started a topic asking what are the Bluetec advantages and so far there is not much than was proved. Smoother running, but I6 is already very smooth.
Than adding 3% gain in the power for 15% LOSS in economy is not what I cal advantage.
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post #12 of 15 (permalink) Old 03-07-2009, 12:39 PM
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Thanks for the reminder (being one that got attracted off topic).

The advantages I see in addition to a bit smoother engine are the 7G-tronic tranny and a bit more power (but I don't remember the US Bluetec figures against the CDI).

7G-tronic brings fuel efficiency but we've already agreed that it does not help as much as the new emission systems are losing. The 5 speed tranny in my opinion is quite smooth too, I don't consider 7G-tronic a big improvement on gear changing smoothness or such.

I'm afraid that the main advantage from Bluetec is just that one can have a newer car if that is important.

It might be different if an ECU expert programmed it allowing the particle filter and possibly other stuff being removed. That should bring significant power advantage plus fuel efficiency.
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post #13 of 15 (permalink) Old 03-07-2009, 12:52 PM
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I am shopping around for another diesel and roughly what I can see is that 1-year newer Bluetec brings about $1000 more than cdi. So the market doesn't appreciate Bluetec too much. It doesn't appreciate Mercedes in general, what is another story.
That's why I am shopping around. If I can buy 4 years old car for 30$ of MSRP, that is a good deal.
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post #14 of 15 (permalink) Old 03-08-2009, 10:27 AM
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Originally Posted by denysimo View Post
Thank you for the reply guys! I live in Canada BTW. I did more research and found that Bluetec is just 100% to do with the engine exhaust, So Bluetec Mercs are compatible with non ULSD. Correct me if I'm wrong here.
You are "wrong here."

ULSD has nothing to do with the exhaust system but rather with the fuel injectors.

ULSD has EVERYTHING to do with maintaining your warranty, and given that injectors are $700-1000 each that's likely important.

In the USA at least, it's additionally illegal to put non-ULSD is 2007-on diesels.

Questions along the line of "did they really mean it" are ridiculous.

Kent Christensen
'07 GL320CDI
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post #15 of 15 (permalink) Old 06-01-2013, 03:36 PM
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Is driving a bluetech into Mexico a bad idea. Will their diesel ruin he engine system?

2006 mercedes ml500,
2003 sl55 modified,
2003 s55
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