Quote:
Originally Posted by Beau
Let me phrase my question differently - other than the added expense that will result from the costs to reduce the amount of sulfer, are there negative impacts on the engine that will result from reduced sulfer content?
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The sulfur coats and neutralizes the catalytic coating in the converter. This often results in a properly operating gasoline fueled engine being unable to meet emission standards well before the required 100K mile warranty runs out.
In diesel engines, sulfur provides a core during combustion for nucleation to start resulting in the large amount of smoke pouring out of old diesels of the past. Low sulfur diesel allows the DOC's and DPF's that someone else mentioned, to have a reasonable operating life between burn off purges or mechanical cleaning.