Smolan, Kansas. Smolan is a city in Saline County, Kansas, United States. As of the 2010 census, the city population was 215.
Moghissi: Internal corrosion is one of many possible threats to a crude oil transmission pipeline that must be managed. It should be noted that crude oil by itself is not corrosive at pipeline conditions, but water can drop out of the crude oil and allow corrosion to occur where it accumulates. Water carried by heavy crude oils, including dilbit, does not significantly differ in corrosivity from water carried by other crudes.
Virtually all modern multi-weight oils are detergent oils. Detergent oil, cleans the soot of the internal engine parts and suspends the soot particles in the oil. The particles are too small to be trapped by the oil filter and stay in the oil until you change it. These particles are what makes the oil turn darker.