On 21 Jul 2006 08:52:48 -0700,
"greek_philosophizer" <greek_philosophizer@hotmail.com>
had to open a new box of zerones to say:

The GL is considered a concept unit... It's the test bed for the
AdBlue system, which is a urea injection process designed to increase
mileage while taking emissions even lower... The problem, at the
moment, is that the urea is carried in a separate 6 gallon reservoir
which can only be topped-up by the dealer... I don't know that their
aim is to further engineer the system to an owner servicing or not,
but that might be less than appealing to some...

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zenit

The 45 state V-6 diesel will be available in '07 models; '08 model
BlueTec V-6s will be sold in 50 states. The article doesn't make this
time line clear, IMHO.

My understanding is that EPA and CARB want assurance that the owners or
operators would be faithful to filling up a separate tank with urea
solution every time it empties. Without urea solution, the emission
worsens considerably. They have not approved the Bluetec diesel motor
yet because of that aforementioned reason.

I wonder about the availability of urea solutions in the desolated areas
of America West where one can drive for miles and miles without seeing
much of civilisations. (Golly, how I miss those road trips through that
region!)

I can think of feature that cut the terminal speed to the embarrassingly
20mph should the urea solution tank is empty. If not, no functioning
radio, no functioning air-conditioning, no functioning power windows, ad
infinitum until the lazy drivers wise up. Yet, I know owners aren't
really slack about their Mercedes-Benz.

I would feel that Mercedes-Benz ought give away urea solution, even the
bottles at the owners' home the first year, until the network of filling
stations add the dispensers.