Cooking oil in TD5

The plugs on a TD5 are controlled by the ECU. They stay lit until the ECU thinks the engine is warm enough not to need them. The dash light comes on but is not directly connected to the plugs. If you want to prove it to yourself just pull the cable off plug 1 (front of engine) and connect a light bulb between it and ground. Start the engine and you will see that it still has power after the dash light has gone out.

Shifty1962 said:

The plugs on a TD5 are controlled by the ECU. They stay lit until the ECU thinks the engine is warm enough not to need them. The dash light comes on but is not directly connected to the plugs. If you want to prove it to yourself just pull the cable off plug 1 (front of engine) and connect a light bulb between it and ground. Start the engine and you will see that it still has power after the dash light has gone out.

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You don't need to take the cable off.
Just connect a test lead crock clip to the top connection of any glow plug, and earth the other end.
The test lamp stays lit for a good while after the glow lamp goes out.
The colder the engine and the weather, the longer it glows.

CharlesY

Now its colder ive had to start putting more diesel in which is against what im trying to do ( save money ). Problem is it struggles more in a moring to start if theres more than 15 litres veg oil to 25 litres of diesel. Is there anything i can do to stop this? it starts fine if i put more diesel in, it must be thickening up through the night when its around 0- -1c

small amount of petrol to thin it down.

juiceyv8 said:

small amount of petrol to thin it down.

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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

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

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if i start buying kerosene etc then i might aswell just use 100% dino. ive been buying svo from asda for 83p a litre

Dont get me wrong once she starts it runs great, just takes a good 5-10 seconds when running more veg oil

2 options
either buy & fit a pre heater (fuel) or make proper Biodiesel
Its not hard

Oh & making yer own Bio D is even cheaper than Veggie from the supermarket
When I started I bought my waste oil at 34p/litre, costs me 14p to convert = 50p finished product.
I now get free waste oil, so only costs me 14p/litre

Wait for it...wait for it......

Don't cut yer oil wiv white spirit or kerosene
If yer then get dipped by VOSA yer well & truly f@cked.
They'll assume you've bin doing it for the duration you've had the vehicle & want fuel duty off yer...££££
Bastids

CharlesY said:

Anything by way of fuel that passes through a fuel filter is fit to go into the engine.

Engine oil may be a bit black, but that's only carbon black, which is a good lube in its own right, and burns nicely!

I do it all the time.

CharlesY

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CharlesY

could you let me have more info on using old crankcase oil as fuel please. I have run many of my vehicles on various alternative fuels over recent years and most of them go great on whatever I have put in them. I want to try running my 2.5 N/A diesle 110 on used engine oil but just wanted to make sure I don't need to do any chemistry tricks to make it work? Do you recomend mixing it? or just try it neat in the tank.

Di a 300 mile round trip a few weeks ago in my 110 on bio and it ran fantastic, my merc 300D loves it as well. I can get my hands on plenty of used crankcase oil so it will be put to good use if I can use it without much messing.

Many thanks

SC

mercanlandy said:

CharlesY

could you let me have more info on using old crankcase oil as fuel please. I have run many of my vehicles on various alternative fuels over recent years and most of them go great on whatever I have put in them. I want to try running my 2.5 N/A diesle 110 on used engine oil but just wanted to make sure I don't need to do any chemistry tricks to make it work? Do you recomend mixing it? or just try it neat in the tank.

Di a 300 mile round trip a few weeks ago in my 110 on bio and it ran fantastic, my merc 300D loves it as well. I can get my hands on plenty of used crankcase oil so it will be put to good use if I can use it without much messing.

Many thanks

SC

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If you are running an engine with an injection pump, there isn't a problem as long as you maintain VISCOSITY (not too thick) and FILTER it.

Really good filtration is the order of the day.

CharlesY

CharlesY said:

If you are running an engine with an injection pump, there isn't a problem as long as you maintain VISCOSITY (not too thick) and FILTER it.

Really good filtration is the order of the day.

CharlesY

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Do you know what viscosity regular derv from is compared to 15/40

SC

Just got this info from a web site about using old crankcase oil as diesel fuel.

How to Filter Used Motor Oil & Make Diesel Fuel
By Michael Arcand, eHow Contributor
updated: July 22, 2010
I want to do this! What's This?
Making diesel out of used motor oil.
Making diesel out of used motor oil.
DIESEL; image by Harald Soehngen from Fotolia.com

Diesel engines run on a special fuel that is really a mixture of gasoline and oil. Used motor oil can be filtered and mixed with existing diesel as an additive that will double the yield of the fuel. Using old motor oil and blending it for diesel fuel has quite a few advantages in saving time and money, as well as helping the environment. Instead of searching for a way to recycle or properly dispose of used motor oil, you can reuse it in the fuel tank of the same vehicle it came out of (as long as the vehicle is diesel fueled).
Difficulty: Moderate
Instructions
Things You'll Need:

* Used motor oil
* Large funnel
* 15 gallon HDPE container(s)
* New paint filtering system
* PVC connectors

1.
1

Examine the oil that you are going to use for this project. Make sure it doesn't have any liquid contaminants you can see or smell. Some contaminants common in oil from engine damage include water and antifreeze. If the oil has either of these components in it, do not use it for this project.
2.
2

Connect the 15 gallon container to the paint filter system so that the output of the filter goes into the container. Connect the filter system to the large funnel acquired for this project.
3.
3

Slowly pour the used motor oil out of its container into the funnel system. Be sure not to overfill the funnel, and allow time for the liquids to process through the funnel and the filter, into the 15 gallon container.
4.
4

Once you have filtered all of the oil in this manner for this container, discard the used filter. Disconnect the filter system from the 15 gallon container and measure the amount of oil using the markers on the side of the container.
5.
5

Add the same amount of diesel fuel into the container as you have oil. For example, if the container now has 5 gallons of filtered used motor oil, then you will add 5 gallons of diesel fuel to the container.
6.
6

Place the cap tightly on the 15 gallon container and begin mixing the diesel fuel and used oil mixture. A minimum mixing time of 15 minutes is required. If the solution does not appear to be completely mixed at this time, then it should be mixed for an additional 15 minutes. Repeat until the solution is completely mixed.

Add this solution to your vehicle as you would normal diesel. It is ready to go.



Read more: How to Filter Used Motor Oil & Make Diesel Fuel | eHow.com How to Filter Used Motor Oil & Make Diesel Fuel | eHow.com

used old engine oil in my 300tdi with no problems - just filtered it through paint filters then into to tank with existing diesel - smoked a little bit on start up but once engine warm no smoke

bmp42 said:

used old engine oil in my 300tdi with no problems - just filtered it through paint filters then into to tank with existing diesel - smoked a little bit on start up but once engine warm no smoke

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Did you have to make something up to do the filtering ( i know I will need to make something) but what did you use/make and a basic how to do do it, if possible.

Or did you just pour th oil from one drum into another with the filter in a big funnel?

SC

filter and big funnel - twice using different grade micron filters

bmp42 said:

filter and big funnel - twice using different grade micron filters

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Hi BMP

sounds good to me, what micron filters did you go for or is it as basic as small, medium and large?

Regards

SC

:search: this forum and you shall be enlightened.
Good luck pouring the oil through paint filters in this cold weather.
It makes the oil sluggish and takes for ever.
If you're serious about it then make up a proper pumped filtration rig.
I can filter 50 litres in about 10 minutes with new filters.
Cut the oil with unleaded at about 10% before filtering as it makes things easier.
Filter the oil to the same level as your on board fuel filter (5-10 microns) and you'll have no problems.

Don't use ANY petrol in the fuel if you are going to use the brew in any TD5 variant engine.
The fuel gets hotter than the boiling point of petrol and can cause bother.

CharlesY