Sulfur content

Sulfur content is one of the main components of particulate matter (PM). It affects engine corrosion, wear, and oil deterioration, and thus it should be kept to a minimum.
When sulfur compounds are combusted, they generate sulfurous acid gas (SO2) and anhydrous sulfuric acid (SO3), and, at the same time, sulfuric acid (H2SO4), which has a severe corrosive effect together with large amounts of generated moisture.
This is why they are the main cause of corrosive action in diesel engines.

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