Diesel Gas installation Nissan Patrol

gollymolly · Senior Member

Diesel Gas installation Nissan Patrol

Zoomtopz · Guru

G'day Rod.

I'm not sure if I can see th reasoning.

In th early 70s , we used to get 4 & a half to 6 mpg in a 250 nat aspirated hp motor in a truck @ 35 ton .

Mid to late 70s , we got about 4 mpg from a 350 turbo hp motor @ 38 ton

Now trucks are operating @ 4 to 6 mpg @ 42 to 60 ton.

What I am saying is - Diesel has Come a long way since we had just grunt , turbo's , computers etc .

I am not sure I would outlay th $ s , for th little you would save . I drive an old Patrol around here

occasionally , with a 4.2 diesel motor . Mate it just hangs in there . It does better economy than my

cruiser , which Is on gas(petrol/gas) . So if you have a more modern Nissan diesel , I would not

*#~ with it .

Richo.

ps . I have just seen your post ' 06 Patrol '

Mate I would stick with what you have , "if it ain't broke , why fix it"

pps. I bought my cruiser with gas conversion , I bought a Stumpy Pajero

for economy , it was also on gas when purchased . I get them Tuned regularly.

-- Edited by Zoomtopz on Friday 5th of October 2012 07:19:23 AM

-- Edited by Zoomtopz on Friday 5th of October 2012 07:20:23 AM

blaze · Guru

I have diesel gas on my discovery. First up I think your increase figures are stretching the truth a fair bit and the power increase is simular but in saying that these aremy findings. The power increase is noticable, when going up a hill wth gas off, when the motoer start to load (work a bit), if you turn the gas on there is an imediate responce and increas in speed, not an extra gears worth but its nice to have. If you have a 100 litre tank of deisel and a 20 litre tank of gas you will travel around the same distance as if you had 120 litres of diesel, the saving comes in because the gas is half the price. For me the major benifet is a cleaner more complete burn of the fuel which means less carbon in the motor, you could extend service times (I dont). I am also a diesel mechanic by trade with over 30 years service, so in a nutshell would I have it again, you bet I would but not with the thought of saving money.
cheers
blaze

gollymolly · Senior Member

Blaze

Thanks for your comments. To install the diesel/gas system was not purely for a cost saving but is an influencing factor. from the web site of Diesel Gas Australia it is promoting 20% cost saving in fuel, which if coinverted by the cost of the 28 l of gas shoule add to approximately 10% to 15% fuel economy.

The testimonials are all positive, which is a good berometer when researching the system. I will talk with the installers over the next couple of weeks when I can hang up the Nail belt when I have finished all the rush internal refurbishemts.

Regards

Rod

marto1944 · Senior Member

Hi Rod

thanks for bringing up this matter it has been on my mind for some time and I think I know where I am going now by the way what is the cost of this addition

thanks

peter

Bluemoon501 · Member

Gday Rod,

I have a 2006 Iveco 3.0 litre common rail turbo diesel towing a fifth wheeler. The rig was new when we bought it in 2006 and weighs in at 9.8 tonnes on the road.

I had a Diesel Gas Australia system installed by their Brisbane agent in April 2008 with 37,771 km on the odometer.

I tow the fiver about 50% of the time and record all refuels. I have a 165 ltr diesel tank and 80 ltr LPG tank. Typically it get two diesel refuels to one LPG refuel.

Diesel consumption figures at system installation were:

14.03 ltr/100km

7.13 km/ltr

20.24 MPG

As at fill up yesterday the odometer read an additional 66,572 km i.e. since LPG system installation.

The diesel consumption figures are now:

13.20 ltr/100km

7.58 km/ltr

21.52 MPG

I re-did the sums using actual figures about two years ago and it gave me an improvement in fuel of just over 7% and it would take over 200,000km to break even with the cost of system. I was not eligible for LPG rebate.

So if you are considering it for improved fuel economy then you really need to do the sums for your own situation.

However if you are doing it for extra power, as I was, then in my view it is well worth considering. I definitely have an extra gear when going up the range at Toowoomba or Cunningham Gap.

Another thing to consider is availability of LPG autogas. I have more than once run out of LPG for 100s of kms when out west.

Additionally Diesel Gas Australia require that you have the system serviced every 12 months by one of their agents to maintain warranty. Their agents are not easy to find away from the major centres and non-existent out west. The service costs $70 - $90 to replace the $10 filter. An easy DIY job.

In summary I would tend to agree with what blaze said that there is an improvement in power and clean burning of all fuel with a very small improvement in fuel economy.

Cheers

Mike

gollymolly · Senior Member

Thanks Mike and Blaze for your great input. You have convinced me not to install the diesel/gas system as I don't think I will be doing 200,000K to redeam the cost of installation.

Another system is the 2 1/2 inck exhaust system with clean bends. A friend has one installed on his Nissan and claims 10% bertter fuel econonm and greater power at $500.00.

Thanks

Rod