Sulfur content

lowers value of crude¹⁾
reduces energy content by displacing HC molecules²⁾
corrodes metal piping & tanks³⁾
becomes pollutant when burned⁴⁾
sweet (low sulphur); sour (high sulfur)⁵⁾
binds more easily to heavy complex HC molecules (found in heavier crude)⁶⁾
products with smaller molecules (gasoline, diesel, jet) have lower levels of sulfur⁷⁾

^{1),
2),
3),
4),
5),
6),
7)} Oil 101