is crude oil corrosive
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.