AI Summary

A recent development in diesel engine technology involves the use of onboard hydrogen-injection systems. These systems utilize electricity generated by the diesel engine to split water into hydrogen and oxygen, which are then reintroduced into the engine. The resulting change in exhaust appearance may be misleading, as it does not necessarily indicate improved climate performance. The distinction between smoke reduction and overall carbon emissions remains crucial, and customers should not rely solely on visual changes to assess the environmental impact of their vehicles.

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