Oil can be a good resource mostly seen in the ocean and rocks can give oil or triolbites can give oil to amonites can give oil too.
Just murder the sea pickles and get so much oil that America will want to know your location
Sea grass rocks give oil watch out for Megalodon and bassoSauris
P.s I don’t know how to spell good
Go to rag ship at vb and kill the sea demons and you will be liberated by america
Everyone needs oil for late-mid-game, so make yourself some fur armor and go to the snowy areas, there is usually alot of oil rocks on the beaches. Use a metal pickaxe to harvest oil.
Kill basilosaurus= infinite oil
Dung beetles make some oil of ya give them poop.
I think basliosaur actually drop oil naturally if you take it, not sure tough.
This can be found in one of the genesis 2 space biome rotations, and is farmed from rocks that look like a 3 year old has tried to paint them black