I recently contacted United refining of Warren PA and asked if their Kwik Fill gas was Top Tier. I tried to post their rep;y but couldn’t so I will summarize.
They say their gasoline has no additive prohibited by any carmakers and has more than minimum detergent levels but they chose not to pay the large fee to be listed as Top Tier.
Any thoughts? They are the two closest stations to me and I use their 91 octane , ethanol free gas in my lawn and snow equipment.