I currently have a 4.6 petrol P38 that has a single point LPG system that was fitted about 8 years ago. Im still finding the cost of fuel for the car very high, for about 80 litres of LPG im getting about 220 miles. I dont want to get rid of my Range Rover because I love it so much and im thinking about converting it to diesel and using a bio fuel mix. Has anyone done this? and could you offer any advice? thanks Andy