Used cooking oils and fats as diesel engine fuel   

Used cooking oils and fats are also known as waste vegetable oil (WVO). They are increasingly in demand and big waste oil collection companies pay for the privileged to take restaurant oils away (or they supply cheap vegetable oil in return for used oils)

When using cooking oils as fuel in diesel engines care should be taken to remove both particle and water contamination.

[edit] Used oils for fuel

• archive of wiki with good information about used oils (WVO), cleaning, dewatering and testing oils for water content

[edit] Upflow settling

• Discussion forum "UPFLOW SETTLING - DEWATERING: Simple VO cleaning system"

[edit] Cold upflow

• Discussion forum "Dewatering and Cleaning VO with Cold Upflow Settling"
• Discussion Forum "Critique my twist on cold upflow settling"