Take care to ensure only Bosch pumps are used with vegoil, I used vegoil with my Lucas pump and it was ok for nearly a year on about 25% mix before the seals went. The car ran well on vegoil and after it started to leak I ran the car on anything, even my old engine oil, just remember to to get the viscosity right by adding a small amount of petrol. It is important to remember that the fuel lubricates the pump and so if the viscosity is too high the pump won't get lubricated properly, especially on start-up The only other drawback on running vegoil is that I was hungry all the time because it smelt like a chippy !!!