The SAE magazine (Automotive Engineering) has writeups on the new Audi diesel as well as the Honda diesel. Honda seems to be doing without the urea injection process which I think is good, one less complication. (The whole separate tank for the 'blue' compound reminds me of remembering to get oil into the tank for a two-stroke ; -).
Nixon is really up to date on the diesel scene - he needs to chime in here.
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