I wondered if there was any significant difference in running on LPG as well as if there was any fuel cost savings.

Of course the tax reduction on LPG could be taken away at any time thus making the whole thing a waste of time but I would genuinly like to know peoples opinion on fitting, overall conclusions etc etc.

TIA

Just had mine done on my DII - no noticeable change at all. Though i am now miraculously £200 a month better off ;-)

I went for a donut tank that replaces my petrol tank (I had to keep the boot clear for work so couldn't fit the usual boot 'cigar' tank), then an auxilary 40litre petrol tank in the offside corner. You can get smaller petrol tanks that sit up inside the rear offside wing, but i wanted the slightly extra range for holidays in places where petrol stations are few and far between - let alone LPG equiped ones :)

The only real sod is that becuase the donut only takes 70 litres, I have to fill up a little more often. But then that £200 reminds me that is not so bad!

Could you possibly give an indication of the costs involved in the job please?

Do you think LPG charges will rise ?

Cost wise, the main cost (i'm told) is in the Injectors - 1 per cylinder makes an 8 cylinder car much more expensive than others - typically you can expect to pay from £1800 to £2500 depending on the make and quality of the job - usually VAT on top as well.

There are a few companies that offer DIY kits for about 2/3rds of that which I thought of doing for a while, but then even though they check and certify it afterwards (you can't get insurance if its not certified) I still worried about the possibly options for my workmanship causing a large Disco shaped fireball!

The company I used in East Yorkshire is AutoGas Yorkshire who were absolutely fantastic - http://www.autogasyorkshire.com/ and tell them I sent you ;-) It was little over £2K+vat. They even lent me an LPG DII while the work was being done (takes 5 days) to get used to it.

Halfway through I noticed that the one they lent me had 2 LPG fillers - one on each side - as you tend to find that most smaller stations only have one LPG pump with outlets either side, and theres always some guy filling up a van on the adjacent pump! With 2 fillers you can park either side and it makes life MUCH easier. I rang them up halfway through the conversion and they said no problem to add, and only cost £90 - told you they were good :D

Cost of fuel wise - I did hear that they had promised to keep the duty low until 2009 though I don't know if thats still the case. I would expect the price to rise slightly, but not by enough to make it non-economic in the near future. Basically do it now before they notice!

On the plus side, HM Revenue has just announced that small producers of BioFuels (pretty much home convertors) can now pay virtually no tax on doing it all which is a massive change. They also claim that they will review this over the next year or so to include larger convertors. This would suggest that the "green" fuels are currently in favour so you never know - it might get better for LPG too in the not too distant future.

One sobering thought though - in general, LPG is a by-product of the petroleum refinery business and without Petrol being refined, there would be no Liquified Petroleum Gas. Therefore if more than 50% of people switch to LPG, there won't be enough petrol being made to make the LPG ;-):P:w00t:

Now if you can have a huge tank fitted at yer abode you can get it even cheaper:D

Your tank doesnt take the full amount though does it, expansion and all that.?

Peter, Could you have gone bigger than 80 litre without loosing out on your petrol capacity please?

The 2 other options are the torpedo tank in the boot in which case I think you can go up to about 120 litres or so, or on other cars and D1's you can fit a pair of tanks behind the sills underneath on each side - on the DII there isn't enough room and the air compressor for the suspension is in the way anyway :(

With both of those options you can keep the original petrol tank

Fuel about 40p / ltr at the moment. No noticable problem with performance. PLENTY of places to get LPG. Bought 2 of the vehicles with the conversions on and didnt pay any more above a non LPG, converted one, recovered the cost within a year and think I ran it for about 5 years with it on.

Main suggestions, use a REPUTABLE installer. Get as large a tank as you can to reduce the pain of refuelling. The RR is OK for about 250 to 300 miles between fills depending on type of driving. Think it takes 80 ltr to fill.

I reckon the bigger boot area in the D3 would mean you wouldn't miss the loss of space as much. 

It will probably invalidate any warranty you might have.

I will have to discuss that with my personal advisor :D  Thanks for the tip.

When I bought mine the dealer recommended someone to do a conversion in the Mancheter area, can't remember who, but said that they would honour any warranty on parts that had not been fiddled with (eg suspension, electrics etc) and that the conversion itself should not cause any warranty problems on the engine unless it was poorly fitted. I understand that alot of Petrol FFRR's and RRS's have been converted fresh out of the showroom with no warranty impact.

I have a D2 with twin 40 litre tanks in the place of the old petrol one and a 9 gallon petrol tank. There is no loss of power with the multi point systems and you are so green its fantastic. CO2 yes but no Fuel impurities, no oil dilution/ degradation (you have a problem to see how much oil is on the dipstick it is that clean), and the big thing that no one talks about is pm10s, particulates that are smaller that 10 peco meters (thats 10,000,000,000,000 of a meter) these are so small that they are breathed in and go into the lungs and stick there, your body cannot get rid of them. Then they interact with your bod and can cause cancer. All cars running petrol emit these, even hybrids (when they are running on petrol):exclamation:

One thing about the v8 engine is cam wear on the outer positions - known problem caused by oil degradation from the fuel, if you change your oil every 2.4k miles your ok, but with gas its great.

I like gas - also if you go abroad, belgium ~27p L-1, and in poland ~15 to 18pL-1 !!!!!

If you have any other questions.........

Once again thanks for the offer

regards

T