Re: mpg on 156 1.8 lusso
Mikebrown - those are not my calculations, they are the calculations on the website I pointed you to.
In fact MPG on gas is about 15% less but that is taken into account in the calculations.
I was just trying to inform all the questioners on this thread where they can easily obtain the answers - such as it does NOT take 20 years to recoup and that it is petrol engines that are covertable and the cost of conversion, etc.
The site makes intesting reading especially if you are a high mileager. The queen, tony blair, president bush - all are LPG users. (they charge us high tax but use low tax LPG themselves).
I was also reading, either on this site or another LPG related site, that in Italy it is very difficult to sell a car unless it has already been converted. So maybe dual fuel alfa's may be somewhere in the pipeline already.