Here is the email response I received from Speedway when I asked about their Top Tier status/plans. This was some time ago.
This is an acknowledgement of your E-mail. Speedway's primary fuel supplier is Marathon Petroleum Corporation. Marathon's fuel fully meets industry standards. At this point Marathon has no plans to become a top tier supplier. One of the primary reasons is that there is no proof that top tier fuel is better for vehicles
This is an acknowledgement of your E-mail. Speedway's primary fuel supplier is Marathon Petroleum Corporation. Marathon's fuel fully meets industry standards. At this point Marathon has no plans to become a top tier supplier. One of the primary reasons is that there is no proof that top tier fuel is better for vehicles
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