lucas diesel pump Vrs waste veg oil

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kiwi
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Post by kiwi »

JayW wrote:
kiwi wrote:Ok I'll bite :)

So when the price is right how good is the fuel consumption on veg oil compared to Diesel?

Does the cost then per mile work out cheaper on veg oil?
I've heard talk that the economy is only slightly affected, about -10%.

Cost would depend on where you get the oil. In the UK we used to be able to buy 3lt of veg from supermarkets for around 80p a litre but in the last 3 years that's now up to around £1.35 almost entirely due to the use in cars and the greed of the manufacturers cashing in on it (yes, a small part is due to increased transport costs). Whereas only a small minority use it for cars, everyone has to pay the inflated price so they're really coining it in!

That can go straight in your tank diluted with diesel.

If you're using old oil then it'll either be free or you'll pay the kitchens whatever you agree, but you'll have to process it. A very simple system can be knocked up with northing more than a large clear vessel (such as a dustbin or brewers vat), a few easily obtainable plastic taps and a couple of other odds & sods costing no more than £30-£50.
I might look into this a bit more, the missus being a chef (no not a cook) has a source of used cooking oil which she probably can get FOC. Only snag its about 20ltrs every couple of months.

Comparing the running cost between the Diesel and the Petrol BX works out as a saving of 10cents per kilometre, which included the Crazy Road User Charges working out at 4c per km. Modern Garmin GPS systems have a solution to them however the penaltys are being revised to stop such fraud :roll:

10 cents = 5 pence per KM or 8 pence per mile! That is what I save as a BX diesel owner however I get screwed an extra $130 (65 quid) per year on the road tax. So realistically the first 1,300km per year is not a saving but given the TXD has done 8,000 miles in the 6 months I have had it then I am not crying about that.

It is useful to know that when we go on a long haul shopping trip that the cooking oil can be thrown in the tank at a push :lol:
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91
KevR
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Post by KevR »

smiffy1071 wrote:I've just bought annother BX TZD turbo, which has been run on chip fat.

This car has been sat for ages, and to be honest, I don't trust it because I've heard too many horror stories of what it does to the fuel pump, so the first thing I will do before using it, is to replace the engine!!!
Seems a bit extreme. Why not just change the pump and injectors...?
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MULLEY
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Post by MULLEY »

I would say that the engine would be fine, infact its probably nicely de-coked tbh. I would certainly check the fuel tank, the diesel pump for sludge & change the fuel filter. Aside from that, i reckon it'll be fine :D
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

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smiffy1071
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Post by smiffy1071 »

KevR wrote:Seems a bit extreme. Why not just change the pump and injectors...?
The engine currently in the car is a mish-mash of early, and late parts....
and just looks wrong for the car.

I have sat in a spare parts car, a known good engine with PR valve, and turbo. This is the reason I'm happy to change the whole lot!
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MULLEY
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2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - SORN
1992 TZD Turbo Estate - SORN
1991 Gti 16V - Blaze - crash damaged, will get repaired - SORN
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
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Post by MULLEY »

Aha, in that case i can understand the engine change :D
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

I'm not just a username, i'm also called Matthew.
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xac
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Post by xac »

The issue with Lucas pumps and veg is that the pumps use the fuel for internal lubrication, and when veg is cold it doesn't lube enough so moving parts start to wear and eventually seize.
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smiffy1071
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Post by smiffy1071 »

That sounds about right.... I remember this sort of thing used to happen when they first brought out Ultra Low Sulphur (uls) diesel.
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xac
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Post by xac »

I'm sure davetherave runs his Lucas CX on veg using a dual tank system, so get the engine up to heat, have a pre-heater on the veg fuel lines, switch over and then switch back before you reach your destination to flush the lines with diesel.
Or, just get a 1.9TD Xantia ;)
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