So are there any horror stories about a d-gas setup? Or is it really that good?!

[Young Angus]

I'm not trying to get stuck into diesel gas here, in fact I just purchased a D1 off a fellow forum member with a 300Tdi on d-gas and it runs like a dream and I love it. I'm just curious that I hear heaps of greatly positive accounts of d-gas (and why wouldn't I it's awesome) and was wondering if there were any horror stories about it that no one talks about...or is it really just that fantastic? :D

The reason I ask is that my mechanic who is doing the Vic RWC on my new acquisition said straight away that he didn't think d-gas was a good idea...A NON BELIEVER!!! But he drives a Cruiser so figure that out :p

I'm very happy with my d-gas, it drives fantastic and I just got 900km out of a full tank of diesel (with nearly two small tanks worth of LPG) on a road trip back from Adelaide to Melbourne...can't argue with that!!!

[p38arover]

Are you referring to D-Gas the brand or LPG fumigation of diesels in general?

[zuno555]

I am still very happy with mine after 5000kms.

I have not heard any first hand negative reports, but a mechanic I know advised against it, but he also said the power gains would be negligible, but they are quite noticeable. :)

Done my first oil change since dgas the other day, and have already noticed the oil staying much cleaner than before. That must show that the engine is burning cleaner and more efficiently. This was using the same brand/grade oil that I have used since I bought the car.

Car is using 10l/100 diesel and 2.8l/100 of gas.

[bee utey]

Are you referring to D-Gas the brand or LPG fumigation of diesels in general?

d-gas as shorthand for generic lpg fumigation. Note to Young Angus: some people on this forum like their definitions to be precise.:D

Interestingly I confirmed the other day what someone wrote about fumigation, that substituting gas for diesel makes the EGT's run lower. Driving a 2.8 Pajero up the big hill on Adelaide's SE freeway with the cruise control engaged at 100km/h the EGT dropped from 650C to 625C every time I clicked on the gas and let the cruise maintain an even speed.

[Young Angus]

Haha I'll make sure I'm spot on with my terminology from now on ;)

On my drive from Adelaide back to Melboure via Port Fairy and the Great Ocean Rd I noticed the exact same thing, the EGTs were lower with d-gas switched on every time for the same kind of driving, so that seems like a pretty good thing to me!

[rangieman]

i bought a d1 300Tdi with diesel gas and ive done over 10000 ks and am very happy with so far ,

Although in saying that the previous owner paid 4g for the conversion , With the gains you get i dont think in my opinion it isnt worth the expence for the gains in performance you get;)

[p38arover]

d-gas as shorthand for generic lpg fumigation. Note to Young Angus: some people on this forum like their definitions to be precise.:D


These days it's hard to tell as many people have never heard of the shift key so one isn't sure if they are using generic terms or specifying a brand. :p

[big guy]

These days it's hard to tell as many people have never heard of the shift key so one isn't sure if they are using generic terms or specifying a brand. :p

And so it starts.

D-gas is brilliant, in my opinion and experience its the single biggest improvement in terms of performance without any mayor mechanical alterations and engine out mods.

Hope Young Angus has a great run out of the Disco and thanks Bee utey for the great conversion.:)

[Blknight.aus]

I know of 2, one first hand from being the guy who recovered the vehicle and helped change the engine and the other from a reliable source. Both cases were "fiddled with" after the initial installation was completed. Me, I blame the idiots who played with it after install.

both cases were nissan and piston meltdown was the cause of engine death. BUT in Both cases the owner or some idiot redneck (possibly the same person) "retuned" it post completion.

I have also heard of some incidents of increased metal contamination in the oil of engines that have been diesel gassed but they were quite some time ago so may have been while they were getting it all dialed in or from naysayers who have skewed data representation.

[It'sNotWorthComplaining!]

I

I'm very happy with my d-gas, it drives fantastic and I just got 900km out of a full tank of diesel (with nearly two small tanks worth of LPG) on a road trip back from Adelaide to Melbourne...can't argue with that!!!

Don't TDi 300's get that sort of milage on a tank of diesel anyway with out the expense of added lpg? I'm sure I've heard people claim that milage?

[Young Angus]

Don't TDi 300's get that sort of milage on a tank of diesel anyway with out the expense of added lpg? I'm sure I've heard people claim that milage?

The most I've heard people claim without added LPG is 700km.

[big guy]

Don't TDi 300's get that sort of milage on a tank of diesel anyway with out the expense of added lpg? I'm sure I've heard people claim that milage?

I think with mileage, there are soo many variables like, speed, wind, driving techniques and fuel quality that its too hard to compare just any 2 cars.

Give the same bloke 2 different cars and do the same trip on same day if possible with same load etc.

That be a fair comparison.

[pibby]

The most I've heard people claim without added LPG is 700km.

sold them both now but if i didn't get 10.5l/100k around TOWN in either the manual or auto tdi i would be disappointed. 700km a tank does seem quite low.

up to you though whether you are happy with what you get. in my 4.6 disco on injected gas i am dreaming of 25l/100k. :eek:

[seano87]

Don't TDi 300's get that sort of milage on a tank of diesel anyway with out the expense of added lpg? I'm sure I've heard people claim that milage?

The most I've heard people claim without added LPG is 700km.

Manual 300Tdi, I would constantly get 850-900km day to day off 75-80L.

Pure highway I managed 1150 once off 86L. Always filled up the neck so constant fill volume.

Its really not that hard to get good economy from them. Drive to their torque band, don't drive like a sissy all the time. Never heavy brake - time traffic light changes and keep it moving.

Mine had a 2.5" mandrel enhaust, one hi-flow muffler. 2" lift, 31" tyres. No gas.

[85 county]

Everyone who has Gas fumigation, and who has posted loves it.

There are no posts that I have read of anyone disliking it or having problems or motor damage as a result, from anyone who has lpg fumigation.

There are a few posts of motor damage caused by LPG fumigation but these always seem to be some one who was told by some ones second cousin who is married to there grandfather who is also there uncle etc.

There are a few posts on economy both in liters used and cost vers return etc etc

There are many posters who have lpg fumigation who will not post because of the self promoted experts who don’t have lpg fumigation and there constant bagging.

I know of 2 300 tdi’s that were put neck to neck. Both autos one well molested ( 200 tdi manifold etc) and tweaked with no gas. The other only the center muffler cut out and the off boost tweaked a bit.

There was nothing in it, apart form one being cheaper to run and the other rolling a bit of coal.

my NA with lpg fumigation, well i wouldn’t be with out it - brilliant for what it is.
infact i don’t know anyone with a Isuzu county nowadays who has not got LPG fumigation.

[Blknight.aus]

for fuel economy numbers with routine driving the discos hitting 850+k to the warning light in city cycle and often breaks the 1000K mark for constant highway cruising.

[85 county]

Well a disco can be tuned either way, economy or power. neither return the same economy numbers.

Best i have ever seen is a 200 tdi LT77 disco, 6.9 ltrs per 100. tail gateing a defender all day.

[Young Angus]

sold them both now but if i didn't get 10.5l/100k around TOWN in either the manual or auto tdi i would be disappointed. 700km a tank does seem quite low.

up to you though whether you are happy with what you get. in my 4.6 disco on injected gas i am dreaming of 25l/100k. :eek:

Haha yeah the V8 certainly is a different story.

I'm not sure what is good and what is not but I know my Tdi has had the injector pump tweak and is slightly tricked up for more performance without the LPG taken into account yet...I guess that would probably lower economy a bit wouldn't it?

[redandy3575]

sold them both now but if i didn't get 10.5l/100k around TOWN in either the manual or auto tdi i would be disappointed. 700km a tank does seem quite low.

up to you though whether you are happy with what you get. in my 4.6 disco on injected gas i am dreaming of 25l/100k. :eek:

Wow 25l/100k..... I take it you have a 4.6 Rangie motor in yours?? I get on average about 19Lt/100km around town, and about 12-13lt/100km highway cruising all on Petrol. I've been tosing up for a while now wether going LPG is the way to go. $4500 minus $1500 rebate is still a lot of money to part with. I'm still not convinced that the LPG installation is thorough enough, and after talking to a few people that had it done to their 4x4's, they don't seem to think it makes much difference at all, and in hot weather the systems fail all together forcing them to run on petrol until the ambient temperature drops below 32 degrees, not to mention the electrical issues. The vapour injection is definetaly the safer option for Rangies, but the high price for these kill the incentive. Even though the engine runs a bit cleaner, you need to remember that petrol engines were never really designed to run on gas, and therefor modifying it to do so on an aftermarket basis is a form of non- approved modification. If Range Rovers and LandRovers in general for that matter endorsed LPG as a factory option, or even recommended it for conversion via instructions of altering the original ECU to suit (instead of fooling it with another sub-ECU), then without a doubt, i'd straightaway go for LPG. But at this stage i'll stick with Petrol.

[Young Angus]

There are plenty of people that will give you the "gas is for barbeques" line but once I got new plugs and leads for my V8 it never had a problem on lpg, in fact it ran just as well as petrol. If you do the math I think the V8 on lpg was cheaper to run than a Tdi getting high km from a full tank, only you had to fill up the lpg twice more than the diesel. Put some sill tanks on the V8 though and you'd have more range which I would have done if I had not sold it (the person buying it will probably do that), or you could have the lpg tank in the boot and take up most of your boot space but this just was never an option for me so I made sure I bought an lpg Disco with lpg scuba tanks under the back floor instead.

I bought my V8 with a good lpg system installed already, but I would not have paid that much money to have one installed if I didn't already have it, I'd just run it on petrol and pay less for the car in the first place...hypothetically of course ;)

[redandy3575]

There are plenty of people that will give you the "gas is for barbeques" line but once I got new plugs and leads for my V8 it never had a problem on lpg, in fact it ran just as well as petrol. If you do the math I think the V8 on lpg was cheaper to run than a Tdi getting high km from a full tank, only you had to fill up the lpg twice more than the diesel. Put some sill tanks on the V8 though and you'd have more range which I would have done if I had not sold it (the person buying it will probably do that), or you could have the lpg tank in the boot and take up most of your boot space but this just was never an option for me so I made sure I bought an lpg Disco with lpg scuba tanks under the back floor instead.

I bought my V8 with a good lpg system installed already, but I would not have paid that much money to have one installed if I didn't already have it, I'd just run it on petrol and pay less for the car in the first place...hypothetically of course ;)


Oh definetaly, i agree with what your saying. Like me, if the LPG system was already there in my P38, then i'd see the savings straight away. But that's the issue cause i'd have to spend the big bucks (almost 1/3 of the vehicles value) and wait a few years to break even, and that's providing everything goes smooth with the system. When enquiring at different LPG conversion places, everyone was using a different LPG system i.e some were made in Italy, some from the UK, some from i think china and holland. So you don't know whats good and whats not.

[Young Angus]

Yep I totally understand, I definitely wouldn't shell out the money if I didn't already have it. You'd almost be better off selling your car and buying another one with the LPG already installed if you really wanted it...other than that just enjoy the V8 :D