They convert vehicles to run on vegetable oil and they have set up biodiesel fueling stations throughout the region. Based in Los Angeles, California, United States. Also has forums and tips on collecting oil.

Blog that tracks one man's usage of WVO in a Mercedes 300TD.

Discusses diesel vegetable oil conversion systems. Reviews, assorted information, links, and tips.

Provides news and promotes the use of WVO (waste vegetable oil) as an alternative to diesel fuel. Links, news articles, and a message forum.

Public awareness campaign to highlight alternatives to America's fossil fuel addiction and to help grow the movement to use alternative fuels and sustainable energy in a vegetable oil-powered schoolbus.

Resource for running a car on WVO and SVO. Contains a map of filtered oil sources, photo gallery, links to news items, and a discussion forum of conversion projects.

Offers straight vegetable oil conversions, parts, and kits. Also provides on-site installation in central Florida, United States and conversions for all diesel applications.

Offers one- and two-tank conversions for diesel vehicles in the Wales, United Kingdom. They also sell duty-paid vegetable oil.