CharlesY it's never caused me any probs.
I do use contaminated or stale petrol which may be less volatile than fresh.
 
hi all new to site (fantastic information) and first landy (99 disco 2 td5) read all of this thread and i have 5 gallons of old engine oil in garage that i was going to take to the local recycling center, am i right in thinking my disco will run on this mixed 50/50 with diesel, if so can any one let me know a simple way of filtering this oil. I have seen some fantastic filtering systems on here but i only have 5 gallons so don't want to go to too much expense or should i just throw it away, thanks in advance. Paul
 
I just threw 9 litres os veg oil into my Disco TD5.
It cost just about £1.00 a litre (rip-off) in ASDA.
Pump diesel is £1.32 here today.

Nine times 32p is £2.88 in my pocket.

The Disco runs sweeter even with just 10% straight veg in the fuel.

CharlesY
 
So the problem now is as a TD5 owner what advice should one follow...add unleaded to get the viscocity right or not!!??
 
Legion said:
So the problem now is as a TD5 owner what advice should one follow...add unleaded to get the viscocity right or not!!??
Click to expand...


Be very cautious using petrol to thin down fuel in a TD5 system.

The fuel in the system gets hotter than the boiling point of petrol, and that can cause a lot of trouble.

CharlesY
 
CharlesY said:
I just threw 9 litres os veg oil into my Disco TD5.
It cost just about £1.00 a litre (rip-off) in ASDA.
Pump diesel is £1.32 here today.

Nine times 32p is £2.88 in my pocket.

The Disco runs sweeter even with just 10% straight veg in the fuel.

CharlesY
Click to expand...

Has anyone tried chili infused Olive oil?? if it no good in the landy its bloody nice on Pizza :D
 
As a new member I could have read this topic 5 times and still found it interesting.

It seems that the td5 will run on 50% diesel with 50% of just about anything else. I am still unsure about adding petrol as a thinner due to the fuel heating issue, but it seems that many are doing it without problems..........fascinating!!
 
CharlesY said:
I strongly advise AGAINST using petrol / gasoline in any TD5 fuel system.

Use kerosene or white spirit instead.

The fuel in a TD5 engine circulates from the tank, to the pump, to the filter, to the engine, and then back to the pump, round and round. The problem is that the fuel gets VERY HOT because of the way the injectors work. The fuel will probably get hotter than the boiling point of petrol, and that is when the trouble starts. Big gas bubbles of petrol vapour can form, which causes the injectors not to fill with fuel properly, and the power drops right off, and the engine may stop.

Been there ... done that - by accident. Petrol in diesel tank trick!

CharlesY
Click to expand...

sorry but i proclaim that to be BS, when mixing svo with petrol the mixture doesn't take on the properties of petrol as there is far more svo than petrol so it becomes thinned out svo, but slightly increase it's flammability but not too much

you're thinking of diesel (flammable) and petrol (flammable) which when recirculated would understandably create the gases you're on about

but never on your life would petrol mixed at the correct ratio of 20% be more reactive to heat than diesel, the main thing is to make sure it's well mixed
 
Last edited:
twelfty said:
sorry but i proclaim that to be BS, when mixing svo with petrol the mixture doesn't take on the properties of petrol as there is far more svo than petrol so it becomes thinned out svo, but slightly increase it's flammability but not too much

you're thinking of diesel (flammable) and petrol (flammable) which when recirculated would understandably create the gases you're on about

but never on your life would petrol mixed at the correct ratio of 20% be more reactive to heat than diesel, the main thing is to make sure it's well mixed
Click to expand...

You are an expert.

You are also COMPLETELY AND ABSOLUTELY WRONG.
 
CharlesY said:
You are an expert.

You are also COMPLETELY AND ABSOLUTELY WRONG.
Click to expand...

ah i see... so thats why there are thousands of people doing this all the time and not blowing up fuel lines / engines? i have read up a lot on this subject on various veg oil forums and have read up specifically on svo and petrol mixes and it's been proven to be no more volatile than diesel (and alot of evidence to show it is alot less)

so i'd like to see where you've got your info from unless your own experience of mixing petrol and diesel has lead you to this conclusion? of which is a completely different mixture with a completely different kpa value

the only issue to get round is polymerization in newer common rail diesels (assuming the td5 is?) as the higher pressure fuel system creates deposits of plastic like quality but i'm pretty sure with an additive like petrol or ethanol you could get round it, i wouldn't know with regards to that, but i do know it's not dangerous to heat it up, the figure i have from memory is 150 c before you're getting towards dangerous temps

then again.... you could just invest a few quid and make your own bio diesel -
Make your own biodiesel: Journey to Forever

but will take a bit of messing about at first to get everything just so but as i understand it this removes the polymerizing properties of veg oil and once you've got your blends sorted you can do it on a sunday afternoon prepared for the following week



also, well done for making such an educated and thought out reply really makes you look like you know what you're talking about :)
 
quote
........ newer common rail diesels (assuming the td5 is?) ....
unquote

Two points now

1. TD5 is not a common rail system. You seem not to know even that.

2. the fuel TEMPERATURE in the return line of the TD5 system will reach and even exceed the boiling point of petrol. The NORMAL temperature of the return line fuel is over 70°C. SEVENTY DEGREES CELSIUS.

There are some differences between us.

1. I have a TD5 Disco
2. I have tried petrol as a thinning agent
3. I have hard experience.

Your call.
 
twelfty said:
then again.... you could just invest a few quid and make your own bio diesel -
Make your own biodiesel: Journey to Forever

but will take a bit of messing about at first to get everything just so but as i understand it this removes the polymerizing properties of veg oil and once you've got your blends sorted you can do it on a sunday afternoon prepared for the following week



also, well done for making such an educated and thought out reply really makes you look like you know what you're talking about :)
Click to expand...


Dear twelfty,
As you could find out from this forum, I have been making BioDiesel here in fair quantities for about six years.
I use the methanol and sodium hydroxide process (CH3OH and NaOH) to cause transesterification of the vegetable oils, with which process doubtless you will be intimately familiar, you being so expert in these matters. I usually buy 200 litres of methanol at a time. That is enough for about 1,500 litres of BioDiesel.

There are many people on this forum who have learned to value my advice which is, I hasten to say, based less on cleverness and more on experience. I feel comfortable with the members of the LandyZone community making up their own minds whether to take my advice, or yours.
 
CharlesY said:
#

Very interesting!
Two stroke oil is quite special because it is designed to lube first, then to burn out cleanly.

It might just be a very good idea.

I wonder what it costs per litre in bulk?
Click to expand...

i will make some enquiries with my oil suppliers ;)

on the subject of thinning with petrol while this was accepted practice back in the days of the 2.25D when using heavy oils/cold climates it is NOT suitable in modern diesels not only due to the much higher temps involved but also due to the washing effect the petrol has on the internal components of the injection system, their only lubrication comes from the diesel they are pumping removing this lubrication (and a solvent like petrol does a fantastic job of it!) exponentially reduces the service life of the component do it for too long and expect catastrophic internal component failure
 
I know nothing about svo and old oil but can say we have loads of vans coming in at work all the time dead, common rails due to misfueling and some common rails dead due to veg oil.
New high pressure pump and injectors and steam the tank to remove all the swarf.


Lynall
 
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