Is it really as simple as chucking cooking oil into your tank on a 96 Discovery 300tdi. If it is why doesn't everyone do it.
Should you run 50/50 mix? Can you go completely veggie? Does it still start in the winter? Whats the down sides? What needs to be done? What can go wrong? Can you switch back to Diesel?
I am planning a trip down to Portugal in the summer, what the views of our european cousins regarding this, do their 'boys-in-blue" jump on you for it?
Thanks