its a yes and no answer yes if you use it all year round and do a fare amount of mileage and no if you are a low mileage user but having said that if you want to have LPG then go for it after all at pres LPG is cheaper than petrol
If you convert it yourself it'll take around 6000 miles to get the money back. If you get someone else (gassure for eg) look at somewhere around 10000-12000 miles to recoup it. After that you're laughing as its 60p cheaper a litre than unleaded.
