My understanding is you'd only get a couple of years of such fun, though, before all the remaining gasoline turned to jelly.
With access to the right libraries, you could gain a basic engineering understanding of how to refine gasoline from crude oil, it would be a definite commitment in time, effort, and exactitude of course. Probably would end up more focused on water, food, warmth, security vs something that involved in the typical post apocalyptic popular media scenario unless you had a cooperative band of intelligent survivors working together without much in the way of further environmental dangers.
It's fascinating to think about. I've learned a moderate amount of basic metallurgy and smithing to make a rock and mud forge and could conceivably return to the iron age if somehow I got warped into the stone age IF I didn't get killed by illness, wild animals, primitive humans, etc lol.
One thing is for sure, most of us would fare poorly, probably me included, in a complete lack of what we widely depend on. I lived through a winter in an isolated Montana one room cabin with no power or running water, just an old wood stove and melting snow for water, dried venison, oatmeal, assorted canned goods. That was a real eye opener, but gave me an immense respect for silence, literature, and senses of sight, sound, smell, motion. Coming back to contemporary society was so freaking noisy it's almost impossible to explain. After about a hundred days of zero human interaction it felt alien to me.