Hmm Tornado Red you still don,t see that you won,t have to suffer at all if something goes wrong with my TDI, neither will anyone else...I just checked, I have done around 20,000 miles on Veggie oil, the Rover TDI has done some 50,000 I say again, you might never be convinced, but some others may use the benefit of my experience. I mentioned before that if my Toledo does suffer catastrophic failure, I will be man enough to report what I find is wrong, I soon mentioned when I lost turbo boost due to cold weather viscosity problems in fact that should have shown how well engineered these engines are, as soon as the viscosity increased the ECU sensed it and shut down the boost, the car was still driveable as normal but simply performed like a non turbo version (sold here for Taxi drivers as the SDI) another reason that I will report is: TDIs have been very popular here, it is not a vast country and accidents do happen, used engines abound in varying states of wear/use etc. so I should be able to replace the engine quite cheaply and easily if it does go wrong, plus the car will eventually be passed to a student nephew, probably next spring, even so, I will require the nephew to run the car on cooking oil and to report to me as a condition of getting the Toledo for free. I too have read all the horror stories, but if some of us did not experiment or take chances, nobody would ever have sky dived. So I suppose I could say something like OK, if my engine is still good after 50,000 miles on cooking oil then it just may be OK for others to try it. Anybody with me? or do I really have to take it to 100,000 before anybody else dare go for it? (Its OK I do know that some of you out there have done as many or more miles on it than I have....but trust me I have been experimenting since the mid eighties and have never lost an engine yet ,nor suffered major failure.