Seems to me I saw a thread where a bunch of people were complaining of widespread problems with bad gas, maybe around the time of Bowling Green.
Check this out:
http://www.cbc.ca/story/business/national/2004/07/21/shellgas_040721.html
It happened years ago, in Quebec, but it shows that these things can happen.
Check this out:
http://www.cbc.ca/story/business/national/2004/07/21/shellgas_040721.html
It happened years ago, in Quebec, but it shows that these things can happen.