I’ve been by this town. It is located on I-80 just east of Rawlins. Population of the town has always been around 400 people and the refinery the main employer. The town is appropriately named Sinclair and, yes, you can get gas there. At least you could the last time I drove by.
Casper has held up fairly well so far, but now I'm hearing more and more stories of oil workers packing up and leaving town. Biden's war on oil is pretty much a war on Wyoming as well.