Cost of LPG injection uneconomic,,,,,,,

I agree with you ...
I am not really looking at the savings or economy in general .. my main interest was the cleaner burn and less soot in the oil and possible longer engine life but I had no luck so far finding anyone who has done it for my engine and I do not trust the installers with their judgement when they have no first had experience with this engine .. All I got was maybe, perhaps, it could, possibly ...

I used to have a petrol Navara some years back with a gas conversion and had nothing but trouble after 3 years running ... and that was a "simple" engine ..

I guess its more proven on the jap cars, but do we really know about long term factors ? and especially on smart common rail diesels ...

gmd

Hey Bilbo,
you have done your the big numbers on the gas, bleep i will be dead and buried e by the time you get your money back, so send me a cheque now.

Old Trucky say( how come trucking companies not adding gas. Have heard they have and have had failures. This should start world war 3 from the believers and non believers.

As far as I understand it is usually fitted for the extra power . upposedly turbo like performance for the same money.
By the tie you whackin the tank and lose heaps of space and the weight and the hasel of filling both up I think you have found why people arnt beating the door down for the fitting

It amazes me how everyone is rushing out to get LPG fitted because of the rebate, I may be wrong but, has no one notice that the cost of installation practically doubled once the rebate was announced.
Chris

Davoe,

If all ya wanted was extra power to say tow a caravan or a boat I could understand someone getting it done. You'd get the extra power and maybe with better fuel economy - it all depends how you drive it. But if you've already got enough power 'n torque for what you tow e.g. my 6.5 Chev, then why bother if it's gonna cost me more 'n I don't need it.

It'd be ideal for something like a Nissan TD42 (N/A or turbo) or say a Tojo 1HZ motor (N/A or Turbo)

Bilbo

They used to fit two different types of systems to diesel engine, one was for economy where the injector pump was locked at idle this supplied enough diesel to ignite the gas. I do not know if this can be used with modern computer controled engines.
The second type was fitted to trucks where they injected gas only when they needed extra power, for hills or overtaking but was not used much as they found it over stresses the engine and caused engine failure.
Chris

I recentlly got mine done, the little 2.8 needs all the help it can get. Cost of $1225 after rebate. I got 14% more power at the rear wheels by the dyno.....similar to the amout some claim from chipping up. I use the same amount of fuel, but 5l per 100k is LPG at 50c per l cheaper, so I save $2.50 per 100k. It will take a long tome to recover the $1225 at that rate, about 50,000km.

So fro the money, I got an extra 28l of fuel capacity, 14% more power, and possibly a longer (or shorter) engine life. If I went out and got a long range tank It would cost me about $800.00 (although I would get 12l extra than I have with the LPG), and about $1500.00 for a chip. It would have cost $2300.00, and I doubt I would ever get any savings with that.

Well, thats how I justified it anyway

Cheers Andrew

G'day mate,
As some on here already know, the 6.5 Chev powered GU I bought in November already had LPG fitted, so I didn't have to shell out the bikkies for the conversion. It's still too early to be sure (as I haven't done any towing yet), but so far I'm actually using less diesel per 100 klm than I was in the 4.2TD. Admittedly, the figures I have for the 4.2 were overall figures which I accumulated over the whole life of the truck. However, I don't expect the Chev to even notice it's got 1.2t hangin' off the drawbar when I start getting away a bit more. I only switch the gas on if I'm going to do at least a 20klm trip, so around town it just runs on straight diesel.

I can see where you're coming from.....if mine didn't have the gas already fitted, I don't know that I would go to the expense of fitting it. HOWEVER, if I did want some extra neddies and/or economy, I would certainly lean more towards the LPG than a turbo. I would never have said that several months ago!! Owning this new truck has really opened my eyes. And the LPG doesn't make the engine temps higher (unlike the issues that apparently face the turbo'd GU's with the 6.5).

Cheers mate

Roachie

Well i have just ahd my 3.0ltr Patrol fitted with the Gas and in my opinion it is the best $1300 I ahve ever spent!!

1.Heaps more power and torque throughpout the rev range (drives like a petrol now)
2.300klms extra between refills.
3.Cleaner oil and injectors.
4.Less emmisions.
5.No more Turbo lag.
6.20% savings on my fuels costs.
7.Extended oil change..no more need for me to do a 500klm oil change in between services

Now at my calculations now getting 1300klms between refills I will only fill up 20 times per year to do 24,00klms and saving approx $25 each time.
Thats works out to be
20x$25= $500 pa saving
Then no more 5000klm oil changes at $40 a pop for the oil means,
5x$40=$240 pa savings

Thats a grand total of $740 saving per annum.
Therefore it will take me under 2yrs to get my money back, whilst all the mean time having a better car to drive.

Cheers

Tha Juice

Bilbo,

Interesting comment that LPG injection is less effective with indirect injection.
Thinking about it, that is logical I suppose.
The two fuels are likely to mix as much compared to direct injection?
Did you get any more information on that?

I also wonder about electronically controlled diesel injection being more effecient with LPG injection, since the computers can be more easily fiddled to gain an advantage of power and economy.

So with my mechanical indirect injection, I am two steps behind.

Hi

I have Dieselgas on my Nissan ZD30, installed end of September 2006. Unfortunately I have not had the opportunity to travel many ks since but I am pleased I had the installation carried out for the following reasons;

- I am saving money, and estimate I will pay it off at under 60,000 kms. LPG and diesel fuel prices are currently bouncing around due to the holiday season but the overall trend will be up over the next year or 3 I guess but hope I am wrong.

- State and Territory Governments are offering different subsidies. I am saving 25% per year, I think, registration costs, but will have to check my rego papers.

- LPG injection to diesel does produce cleaner emissions. This is very important to me as I am concerned about the environment and try to do my little bit no matter how insignificant that may be. European and UK web sites support the theory that there are environmental advantages of LPG injection to diesel. Also check out the Australian dieselongas web site.

- LPG injection has been used in Europe and the UK for many years in commercial vehicles. Search the internet.

- I now can carry 25 litres more usable fuel safely under the car.

- The engine oil is now staying much cleaner for longer.

- Car starts instantly and drives quieter and more smoothly

- Starting from standstill at traffic lights etc and cruising up hills on the Hume Highway to Goulburn is a dream. Car goes much faster from 0 to 50 kph.

- Turbo lag reduced.

- Ease of driving in 2nd gear low range up very steep tracks has improved greatly, it was always good, now much better!

- Automatic changes and remains in higher gears more smoothly and quicker and stays in higher gears longer before changing down.

- Hopefully the engine durability may be extended as there is some technical evidence that the combustion is more efficient and exhaust manifold and gas temperature is lower with LPG to diesel.

Trust this all makes sense

In the end it is up to the individual but I like experimenting with new and interesting ideas especially if they may offer an overall improvement that may become very popular in the years to come.

Cheers
Phil