Vegetable Oil as Vehicle Fuel

Vegetable Oil as Vehicle Fuel: "Using vegetable oil as fuel in diesel engines isn't a new idea. Rudolf Diesel's first engines were built to run on peanut oil for the developing world, which had no petrochemicals industry. Running your modern diesel car or van on veg is just going back to what the designer intended. But why should you make the change?
Vegetable oil is renewable: it's not a fossil fuel, so it doesn't contribute to global warming. By using vegetable oil as fuel, you're making a positive environmental move right where it matters the most, in the one thing in our lives that is the heaviest polluter: our cars.
It's not just green, though. Veg oil is also cheaper than regular diesel: even if you buy supermarket oil and pay the full duty, it works out cheaper. Use waste oil, and the price drops dramatically. Who doesn't want to save money?
Even better, veg oil has cleaner emissions and is good for your engine. Compared to regular diesel, veg oil has massively less sulphur, so there's less sulphur dioxide emmitted when you drive. Sulphur dioxide is one of the pollutants that makes kids wheezy, so you're cutting your contribution to childhood asthma. And because veg oil has better lubricity, it's kind to your engine, too: a veg-fuelled engine runs just a little bit smoother. Fuel efficiency is unaffected."