The staff at Fletcher's Amoco are very nice, and they're usually pretty helpful. They do a pretty good job, and they will usually show you what they did or will do or are doing if you want to know more about the repairs that you need. They also repaired a tire for my wife after closing time and wouldn't accept payment.
Interesting note: they have solar panels covering the "canopy" over the pumps, and use them to partially power the station.
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