Hello David, the octane rating is HIGHER. For LPG it is something around 105. CNG is around 120. You are correct about mileage. An engine requires about 20% more (properly tuned) LPG than gasoline. Low temperatures do not affect LPG. It's diesel that freezes, not LPG. I did think about doing this on my D but decided not to in the end. As someone already said the cost of the conversion makes it not worth the trouble, plus (at least in my country) they will soon add crazy road tax to LPG and then it will make no sense at all. On top of all that LPG is not healthy for the engine unless you have the $$$ to spend on a Direct LPG injection. Additionally with regular mixing of LPG and air you get nasty backfires.... so, when they install LPG they actually install a flap door in the airbox in case you get a backfire. Without it the airbox is history the first time it happens. And of course the problem of where do you put the new tank? Usually it goes in place of the spare tire. The problem is that it is going to be tiny. No more than 15l - 18l and that would be enough for about 100-150km. After learning about the LPG and CNG I decided to stay with gasoline. The price in Poland is currently around $5 per US gallon. Tom Niemczewski vin 6149 (in Poland!) Google earth: 52°25'17.30"N 21° 1'58.00"E dmctom@xxxxxxxxx www.deloreana.com ----- Original Message ----- From: "David Teitelbaum" <jtrealty@xxxxxxxxxxxxx> > The conversion is fairly straight-forward, the BIG question is where > are you going to put the fuel tank? The main advantage (at least in > the US) is NO ROAD TAX. BTW the octane rating is lower for LPG and the > energy density is lower so your fuel mileage will be lower. You could > also have problems if it is very cold in your area in the winter. > Makes the installation more complicated. > David Teitelbaum > vin 10757 > > [moderator snip] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/