Can a diesel engine run on chip fat?
Surprisingly, yes. All diesel engines can run on a mixture of at least five per cent vegetable oil (B5 biodiesel) and 95 per cent diesel, with many older diesels able to run entirely on chip fat. Be careful to use oil rather than fat, and ensure the oil is filtered from any solids. Make sure you check with your car manufacturer whether your engine can run on this kind of biodiesel first, otherwise you may void its warranty. Also be aware of your motors new smell of chip shops wherever you go. The advantage is, of course, the huge amount of money youll save on fuel. Vegetable oil is exempt from tax excise duty.