how many kilometers are you doing a year? and what is your average fuel consumption. Realistically how much longer are you going to keep your current car?
If you haven't thought about any of this yet i urge you to think about it.
LPG systems aren't financially what they seem for example say you're using an average of 14L/100 km on petrol so that means 18.2L/100 km of LPG up here fuel is 50c/L for LPG and $1.25/L (when you buy on tuesday as this is always when you get the lowest price) and an average distance per year of 25 000 km (fairly usual) i would expect that kind of installation to be $3000 at least. you're going to be driving for one and a half years before you break even. and if you think thats bad remember LPG will have excise on it after mid 2008 (i
here). I would price a typical installation of LPG injection, i would expect my 3000 estimate is on the low side (thats about what it costs to do a mixer ring type setup on a 4wd). not to mention the limited availability of LPG outside the cities.
so...... i don't really know if its worth it really. Just buy your fuel on tuesday unlike the great myopic hordes who buy it late in the week and pay an extra 15c/L (last week i bought 98 octane on tuesday afternoon for 5 c less than price of 91 octane the next afternoon)
anyway
gas research has a good website I don't want to dissuade you as I too would like to play with LPG. But there are certain financial realities one must face when examining LPG conversions.