My only problem with LPG is wondering why i didn't make the change years ago, previously have had at least one Diesel since the early 80's.
We have bought a second LPG car now an 04 plate Outlander LPG'd by the maker/importer when new, it was bought because we decided that we don't wish to buy into the modern Diesel and its problems any more, and with a petrol engine you get a better choice of real autos.
My MB which is an older W124 coupe runs as smoothly on LPG as it does petrol and the performance whilst losing its sparkle is still more than adequate for all my needs and will still surprise the owners of modern rapid cars...its a 3.2 24v that i use to commute to work and the odd trip it gets driven quite briskly, just filled up today 55 litres cost me around £42 and the trip meter read 260 mile, its had quite a bit of hard and snow driving so slightly heavier on the juice than usual.
Remember whilst VED is CO2 based the equivalent petrol is higher rated, though i expect that to change following recent revelations from the climate warming lobby that Diesels cause all sorts of nasties.
LPG could be frustrating if you bought a car only just powerful enough.
You need somewhere to put the tank which for most users means a toroidal tank in the spare wheel well (so make sure its got a decent wheelspace, BMW?) and that may be a relatively small tank, i don't need the whole of the huge MB's boot so have an 80 litre cylinder tank bolted across the rear bulkhead.
Don't go too far from your home looking for a converter, you'll want it servicing and it might need adjustments for fine tuning at first, recommendation is everything here, cheapest may not be best.
You may need a flashlube system to help prevent valve burn, Japanese cars not as forgiving as my bombproof old MB though i have one anyway belt and braces, your converter will know.
He did say that generally German cars take to the conversion well, little in the way of valve seat probs, though he was referring to MB at the time, i couldn't say what other makes but he did say when i enquired that Lexus' he has converted have been no trouble whatsoever.
Direct injection engines are not suitable due to the petrol injectors getting cooked.
Until dick turpin decides to raise the taxes on LPG substantialy, probably when the country goes broke with ensuing anarchy in the next few years, i shall continue with LPG, its not for everyone but suits us fine.
Edited by gordonbennet on 29/01/2013 at 20:12
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