Gasoline for lighters is best, but you can also use kerosene from a hardware store.
Yes, because oil is lighter than water and does not dissolve in it.
The water will immediately go to the bottom, and there it will quickly heat up and begin to evaporate strongly, causing the oil to splash in all directions, spreading the fire throughout the kitchen.
If you want to quickly get rid of a stain, use nail polish remover.
Apply this liquid generously to the item.
If the stain is very old, leave the liquid applied to the item overnight.
The general mechanism for cleaning with solvents looks like this: you need to place a piece of cloth under the cleansing area, pour gasoline on the stain itself and iron it with an iron.
You need to pour a teaspoon of ammonia solution into a glass of water, treat the dirty part of the item with a swab dipped in the prepared solution, put a clean cotton cloth on top and iron it over medium heat - all the fat should remain on the cotton.
Special soap for removing grease stains.
It should be used in the same way as regular washing soap.
It is necessary to hold the jeans in warm water, soap the contaminated area, and leave to act for half an hour.
After this, the jeans should be washed as usual.