Dear Big Dave,
with all sincere respect, did you ever live in a high polluted city ?
With a lot of older stinky diesel cars, two stroke scooters, lories, ships, heavy industries and gasoil heating systems like Milan, Naples, Paris or New Deli?
How can you claim that:
Quote:
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Is a tiny amount of environmental improvement (so tiny it is not likely to be measureable) worth sacrificing a lot of MPG?.
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Ok, DPF can decrease the MPG but our clean air is at least as important.
This all remembers me the big discussions when catalytic filters and unlead fuel where introduced in Europe, in the eighties, for gasoline engines.
There where a lot of critiques about efficiency drops, increased MPG and possible destruction of the engines etc. Today all those fears have disappeared, the air quality has been massively improved and the cars are reliable.
The same schema seams now to happen about the DPF. At the beginning Germany, for instance, didn’t want the DPF . But because of other reasons. Now they praise their “clean last generation DPF engines”.
Thanks to the DPF’s the air quality is drastically improving in Western Europe.
Although being a diesel fan, I recognize that the PM matter is a serious problem.
INHO, air quality is as important as MPG. Especially in large agglomerations.