I think gas goes bad after some months, not sure if crude degrades as well.
It's been buried for 100 million years, I don't think a few months is going to do anything.
Gasoline and other petroleum derivatives are not a stable as their underlying source. However consumer gas will last a few years with proper care and storage, the real issue will be when appropriate storage runs out.
Parent specifically noted crude
So what happens if you have gas in your car and don't drive it for 4 months???
There's a decent chance your car won't start. The gasoline in the tank is probably fine, but the gasoline in the fuel lines and so forth has likely turned in useless gunk.
Probably buried in a very different environment?
The knock-on price is to refined gas, but when we talk price/storage of oil that's not ready to put in your car gasoline.