Hi All I am considering having my 330ci coupe 2001 converted to LPG she as only done just over 50,000 miles. Is there a name for a system out there that is safe and reliable for my car? What sort of a price would it cost to have converted? Are they Safe? And are there any systems to steer clear of? I do less than 5,000 miles a year so it may be a cleaner fuel due to the low mileage? I live in the Dudley (West Midlands) area is there anyone out there who could give me recommendations for a local company that do the conversion and are registered and give you a safety certificate that is recognized and guaranteed. I hope someone can point me in the right direction. Believe me any help would be useful. Many thanks everyone Steve I would like to thank you all for your comments looks like I will have to buy a mast, sail and rigging. to save a few bob on fuel, and thanks for telling me about the valves. many thanks. Steve