Black Diesel??

[Bernard LPG]

Originally Posted by Unclefista

And yet people are willing to run on LPG, which produces up to 20% less power, for the sole reason of less running costs.

.

Quite wrong, I'm afraid. Pub talk again.
I would challenge anyone to tell the difference.
Rolling Road tests that I have had done show no power loss and in some cases a power gain on LPG.
Assuming, that is, that the system is set up correctly.

[Number 6]

Originally Posted by Bernard LPG

Quite wrong, I'm afraid. Pub talk again.
I would challenge anyone to tell the difference.
Rolling Road tests that I have had done show no power loss and in some cases a power gain on LPG.
Assuming, that is, that the system is set up correctly.

will have to agree with bernard lpg here my daughters Lexus IS 200 sport runs a lot better on LPG than on petrol

[Unclefista]

Modern systems yes, but older ones definitely provided less power, and even though they did, people still used them for the savings.

To me, if it could be proved that there would be no ill effects from using the stuff, a little less power would be a small price to pay to be able to use a fuel which costs 40p per litre less

[Gazmo65]

I have run both a Citroen Xantia and Volvo V70 diesels on a mix of diesel and veg oil from a supermarket both covered significant mileages 200,000 both ran smoother on the mix than on straight diesel and both performed with no loss in power that was noticeable if at all, these were not common rail engines and the Xantia had a heated fuel filter which helped in the winter. 27second Kerosene doesnt have the lubricating properties of diesel and will damage a diesel pump, you may get away with adding some 2 stroke oil to it or engine oil for lubrication purpose but dont get caught using it as its heating oil not fuel for use in a vehicle and will probably carry the same penalty as red diesel.

[marinabrian]

Originally Posted by Unclefista

And yet people are willing to run on LPG, which produces up to 20% less power, for the sole reason of less running costs.

For the 42p per litre saving, I'd be willing to lose a little power..

Wrong, the calorific value of LPG is equivalent to 100 RON octane rating , LPG has a typical specific calorific value of 46.1 MJ/kg compared with 42.5 MJ/kg for disel oil and 43.5 MJ/kg for premium grade petrol.
The difference being the SG of the fuel is 80% of petrol, so you have to burn more of it to achieve the same power output.
LPG runs cleaner and better than petrol, this is evidenced in the condition of the lube oil at change time.
I pay 72 pence per litre, car returns 35 MPG on local runs, and diesel cost 146 pence per litre at the same garage selling the LPG, so a cost per mile equal to a diesel returning 71 MPG around the doors.
Oh and it doesn't sound like a tractor either
Brian

[2Diesels]

I want LPG for my 8 potter.......................that is all

[Unclefista]

I said "up to" and if you think there's no one driving around in an older LPG powered car that's down on power compared to petrol, I beg to differ.

I wasn't saying every LPG powered car is 20% down on power, I was saying that they can be, and it's a minor inconvenience compared to the savings.
I used to work as a mechanic years ago on a fleet of vans running LPG, and in those days of carbs, LPG was a black art and not one of the sixty odd vans and cars ran as well on LPG as they did on petrol but the savings were worth it. Especially as the company I worked for had their own gas filling station

[marinabrian]

Originally Posted by Unclefista

I said "up to" and if you think there's no one driving around in an older LPG powered car that's down on power compared to petrol, I beg to differ.

I wasn't saying every LPG powered car is 20% down on power, I was saying that they can be, and it's a minor inconvenience compared to the savings.
I used to work as a mechanic years ago on a fleet of vans running LPG, and in those days of carbs, LPG was a black art and not one of the sixty odd vans and cars ran as well on LPG as they did on petrol but the savings were worth it. Especially as the company I worked for had their own gas filling station

1972 Morris Marina TC ? , if the stoichiometric mix is correct, then there is no difference whatsoever in the performance of LPG over petrol.
The misconception that LPG leads to poorer performance, is usually backed up by a poorly set up system.
Oh and in regards to my 40 year old car, I still feel every one of the 95 horse power too
There are however dire warnings circulated via service bulletins by MG Rover, concerning the incorrect use of biofuels, kerosene etc, in the M47R and the effects therein upon the high pressure pump.
You pay your money, and takes your chance, however I wouldn't personally advise the use of anything else other than white diesel from the pump.

Brian

[Ian G]

I think I'll sell my ZT and buy one of these
http://www.autotrader.co.uk/classifi.../2561/usedcars
If and when I can't afford to put decent fuel in it....
Ian

[marinabrian]

Originally Posted by ncfc1950

I think I'll sell my ZT and buy one of these
http://www.autotrader.co.uk/classifi.../2561/usedcars
Ian

Eh Ian?, why? is it the colour that does it for you, if so I have a Marina 1.5 diesel in "Snapdragon"
Brian