Pumpworthy

Black Diamond Market 11

5620 Highway 11 East, Piney Flats, TN

Octane
90
E0

Station Details

Address
5620 Highway 11 East
Piney Flats, TN
Fuel
90-octane, zero ethanol (E0)
Brand
Marathon
Phone
423-391-7570

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✓ Independently Verified

This station has been verified to sell ethanol-free gasoline through chain-website confirmation or direct source data. Last verified May 23, 2026.

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