How to Thin Waste Vegetable Oil

• 1). Filter out any bits and pieces of food from your used vegetable oil by pouring it through a strainer.
  
  
• 2). Mix three parts of used vegetable oil with one part kerosene.
  
  
• 3). Let the mixture stand for a week before using it. Don't mix the kerosene and vegetable oil; letting it sit for a week will allow it to mix properly.