How do I make oil in Little Alchemy 2?

To make Oil in Little Alchemy 2, follow these steps:

1. Start with the basic elements: Earth, Fire, Water, and Air.
2. Combine Earth and Fire to create Lava.
3. Combine Lava and Air to create Stone.
4. Combine Stone and Fire to create Metal.
5. Combine Metal and Earth to create Plow.
6. Combine Plow and Earth to create Field.
7. Combine Field and Fire to create Ash.
8. Combine Ash and Water to create Puddle.
9. Combine Puddle and Puddle to create Pond.
10. Combine Pond and Pond to create Lake.
11. Combine Lake and Lake to create Sea.
12. Combine Sea and Earth to create Primordial Soup.
13. Combine Primordial Soup and Energy (created by combining Fire and Air) to create Life.
14. Combine Life and Earth to create Soil.
15. Combine Soil and Life to create Plant.
16. Combine Plant and Time (created by combining Life and Sand) to create Tree.
17. Combine Tree and Time to create Wood.
18. Combine Wood and Pressure (created by combining Earth and Earth) to create Coal.
19. Combine Coal and Pressure to create Diamond.
20. Combine Diamond and Pressure to create Oil.

Alternatively, you can create Oil more directly by combining Sunflower and Pressure:
1. Combine Plant and Sun (created by combining Fire and Sky) to create Sunflower.
2. Combine Sunflower and Pressure to create Oil.

This is the most straightforward method to create Oil in Little Alchemy 2.