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Originally Posted by xx3
It might be ugly, but it was the first time MB ever suggested using Urea to clean up diesel exhaust.
So historically, it was an important concept showcasing today's Bluetec technology, yesterday...
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You make it sound like MB invented the technology. The idea of urea injection was first conceived and implemented in the european Class 8 truck industry. MB later used the technology in the E320 and called it Bluetec. It's just like Honda's VTEC, BMW's VANOS, Toyota VVT-i, etc etc.