Marathon

Same price cash or credit, which is rare for the immediately surrounding area. Price also tends to be comparable with other area «cash» prices.
They have a super cheap drive through car wash where you used to be able to get a wash basically for free with a fill-​up (due to a reduced pricing on fuel/​gal with wash incentive). But it was one of those «you get what you pay for» sort of washes and was recently closed indefinitely. Probably too many people complaining about vehicle damage and the owner decided it wasn’t worth the liability.
The convenience store inside is a little crusty, run down, and overpriced (not to mention the clientele are a revolving freak show). But this is really nothing atypical for the area. Works just fine in a pinch/​rush. Especially if you are looking for lotto tickets, cheap gas station speed, or crack pipes.