Isuzu Trooper Owners Club UK™

vdavies · ** Joined: 14 Dec 2007 Posts: 83 Location: Merseyside

Hi,
Sorry if this is an old chestnut, but given the rising price of fuel I was wondering about the economics of a gas conversion for my 3.0 td trooper. Has anyone had already gone down this road and is willing to share their experience.
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2001 Isuzu Citation Trooper
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dxmedia · Posted: Thu Apr 17, 2008 7:53 Post subject:

Gas on a 3.0? do you mean LPG, in which case you can get lpg conversions for diesels, but it's only about a 25% mix tops, and it's for an increase in power rather than dual fuel.

If it's the v6, then there's a couple of people on here running on gas. What about looking into running on propper bio, rumour has it that the 3.0 doesn't like veg oil, but there's people running it on this forum with no issues as yet.
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DYLAN · Posted: Thu Apr 17, 2008 10:40 Post subject:

As Chris said a diesel conversion will only give you 20% LPG. With a very light right foot it might give you a little better mpg but not much, It was mainly to burn the diesel more efficiently resulting in a power gain. THIS site claims up to 30% fuel savings AND increased power but i don't think the majority of people will get 30% savings on their fuel bill, I think your best bet if considering it is to talk to as many LPG fitters as possible weigh the pro's and cons and then make a better educated decision.
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2002 S-TYPE JAGUAR 3.0 SPORT

markymoan · Posted: Thu Apr 17, 2008 11:09 Post subject:

Even more info here
http://www.iwemalpg.com/Diesel_LPG.htm
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dxmedia · Posted: Thu Apr 17, 2008 11:15 Post subject:

Good find, but

markymoan · Posted: Thu Apr 17, 2008 11:52 Post subject:

Yet a few lines further up

dxmedia · Posted: Thu Apr 17, 2008 11:55 Post subject:

Good point, not really heard anything on deisel lpg for a few years myself, wether it was snake oil, or it's just rumbling along in the back ground.

One thing from the article, diesel engines only burn about 75% of the fuel during combustion? I find that hard to belive, there would be fuel running out of the end of the exhaust if that was the case?
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markymoan · Posted: Thu Apr 17, 2008 12:03 Post subject:

Its wordplay, it says "during combustion", it doesnt say what happens to the rest.
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Philp · Posted: Thu Apr 17, 2008 12:54 Post subject:

I know of a lad running lpg injection on a diesel skoda along with other mods and it is basically to add power in much the same way as Nitrous Oxide does to a petrol engine. I guess the best option would be bio diesel but not sure on the pros and cons of using it on a common rail engine like the 3.0L. Have a look in the fluids section.
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Phil

96 or is it a 98 Isuzu Bighorn Lotus

stueydo · *** Joined: 14 Mar 2008 Posts: 176 Location: Notts

I remember a couple of years ago, I worked for a company that had a fleet of trucks that ran on compressed natural gas. The only problem is that you cannot compress natural gas as much as lpg, so you need to have larger tanks, hence it is only used for larger vehicles.
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1997 3.1 commercial, bit of a lift, big knobbly tyres and more dints than last weekend

markymoan · Posted: Thu Apr 17, 2008 20:30 Post subject:

Warburtons bread use cng in the artics, they have a unit on site that compresses it and the tanks on the trucks are made of some composite fibre Shocked

If memory serves they have used it for about 10yrs.
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auto · *** Joined: 30 Dec 2007 Posts: 136 Location: Cornwall

If you are using less than 2500 litres a year you can buy and own your own deisel plant (obviously paying fuel duty!) But you would then purify veg oil or whatever by chemically removing the animal fat and thus turning it into deisel oil. There are probably a few sites that can explain more about that. The veg oil side alone is a bit dodgy - purify it or not at all!!

As for gas in deisels, its twenty percent max, which is the amount of petrol contamination a deisel engine can run on. Whether that would make you a saving is up for debate as converting to lpg would costs around £1800 for a decent system, and i cant see the average person seeing a saving for years!

The other option of course is to sell it and buy a petrol version, already converted or ready for conversion. They are relatively cheap to buy so that is more than likely your better option. Once converted, register it as dual fuel with the dvla and get cheaper tax to boot. Then you should be doing something like 40/45 (thats equivilents as lpg does less mpg than petrol but less than half the price) to the gallon, and running a more efficient engine.

DYLAN · Posted: Thu Apr 17, 2008 21:21 Post subject:

markymoan · Posted: Thu Apr 17, 2008 21:25 Post subject:

dxmedia · Posted: Thu Apr 17, 2008 21:26 Post subject:

i did

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