Regular Unleaded Fuel From Tesoro Refinery Reportedly Contaminated With Diesel

KX News is reporting on their Facebook Page that some people who had recently filled with regular unleaded gas in Bismarck-Mandan have been experiencing problems starting their vehicles. Reports indicate that regular unleaded fuel from the Tesoro Refinery may have been contaminated with diesel fuel. It appears that the “premium” grade fuel is not affected.

UPDATE (10:08PM): Official Statement from Tesoro:

The Tesoro Mandan refinery has become aware of customer complaints involving all grades of gasoline, except for premium gasoline without Ethanol, supplied to the Bismarck/Mandan area. Tesoro is currently investigating and will provide more details as they become available.

Customers who have experienced engine performance issues related to the gasoline in the Bismarck/Mandan area on or after the evening of October 11, 2011 should contact Tesoro at 877-876-5383 for further instructions.