Ninehigh
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| posted on 31/8/10 at 10:13 AM |
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Will it float?
I've been looking at these people running vegatable oil in their cars and being a bit miffed that mine can't and I have all this cooking
oil that I could chuck in the tank. I'd like to experiment by putting a small amount in (say 1 litre old veg/sausage oil to about 60 litres good
diesel) and seeing what happens.
I was thinking worst case scenario it runs like a bag of s**te for about 50 miles but then I realised that worst case scenario is the oil floats on
the diesel and starts to run like a bag of s**te at random when the diesel has run out and there ends up being 40 litres of c**p because I thought
it's being ok.
So will old cooking oil mix in with the diesel or sit on top?
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Miks15
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| posted on 31/8/10 at 10:16 AM |
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why not fill half a cup with diesel and half with oil, leave a while and see what happens?
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Ninehigh
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| posted on 31/8/10 at 10:19 AM |
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quote:
Originally posted by Miks15
why not fill half a cup with diesel and half with oil, leave a while and see what happens?
You know that's a good idea, and I have some in a can in the back of the car (abusing the "5p per litre off" voucher)
Also I imagine it would mix as I'm driving, so the only major problem here would be if the oil sinks and it'll be the first thing through
on a cold morning...
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blakep82
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| posted on 31/8/10 at 10:20 AM |
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don't think the oil will float? pretty sure it mixes together ok, otherwise no one would be able to do it properly
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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mcerd1
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| posted on 31/8/10 at 10:33 AM |
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what kind of car would you want to run it in ?
-
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MikeR
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| posted on 31/8/10 at 10:44 AM |
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All diesel you buy now is a blend of diesel and bio diesel. Usually in the uk around (i think) 5%. In some places in Europe its up to 15%.
The problem running straight bio is making sure its 'made' properly. The problem running straight veg oil is that its
'thicker' than diesel. Running a mix is ok cause the diesel thins the thicker veg oil. In summer as its warm the veg oil is thinner
anyway. In winter veg oil (and diesel) get thicker therefore in winter they add stuff to keep the diesel thin and your veg oil blocks the pipes in the
car.
Also, be careful with the fuel pump your running, (none common rail) Bosch pumps are fine with veg oil, lucas ones die. If you've got common
rail ..... good luck, i'd stick with low percentage mixes, especially as the replacement pumps are so f'ing expensive.
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marcjagman
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| posted on 31/8/10 at 10:52 AM |
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I drove all over europe a couple of years ago, before I left I mixed 50% veg oil in my tank, no problems. Go for about 25% oil and you will be okay.
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l0rd
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| posted on 31/8/10 at 11:02 AM |
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Take a pint
Put half diesel and half oil and check how well it mixes.
[Edited on 31/8/10 by l0rd]
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Ninehigh
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| posted on 31/8/10 at 11:14 AM |
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quote:
Originally posted by mcerd1
what kind of car would you want to run it in ?
Tdci mondeo, Ford's own manual says no more than 5% mix of biodiesel and when I started running it on pure bio it ran like a sack of ****
However 5% is 1 litre in 20 right? So 1 litre in 50-60 is less than 2%. Not much but it just sits there until someone throws it out
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coyoteboy
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| posted on 31/8/10 at 11:20 AM |
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Veg oil is not bioD.
BioD is ok to ~30% on many engines, but some less.
Veg oil is only OK in non-commonrail engines.
Veg oil in commonrail engines = pump death (maybe not immediate, but much more rapidly reached), injector contamination (with pump bits) and latterly
car write-off as parts cost is vast.
Don't bother unless it's a mechanical injection system.
[Edited on 31/8/10 by coyoteboy]
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steve m
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| posted on 31/8/10 at 11:48 AM |
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So with a Tdci mondeo, that is aa common rail its a no no ??
As i had thought about adding some in small quanties
Also (hijacking this tread sorry) can used engine oli be used in a diesel fuel system, obviously cleaned and filtered ??
Steve
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coyoteboy
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| posted on 31/8/10 at 11:54 AM |
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If it's any sort of an electronic injection system I'd stay WELL away from it. They're very finely tuned electromechanical systems
designed to work in tight tolerances with known fluids, is mixing in cheap/free/rubbish stuff to save a few quid here and there really worth the risk?
I mean an oil change is what, just over a gallon. So you're getting ~40 miles for free, at the risk of injection system failure. Doesn't
seem like smart risk management to me. Yes the car will run on engine oil, but it has different viscosity, different byproducts, different combustion
properties and is never going to be as clean for shoving through your injectors as normal D - take a look at the holes in the end of a
commonrail/direct injection injector - the holes are literally on the micron scale. Not like petrol injectors where they're hundreds+ of
microns, the D needs to go through seriously small holes at seriously high pressure to be adequately vapourised. Injectors are ~£100 a pop.
There's being frugal/recycling, and there's taking silly risks. To me it's a silly risk, but your mileage may vary.
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jimmyd
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| posted on 31/8/10 at 01:32 PM |
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Mondeo is common rail. I wouldn't risk it these things do not like unclean fuel of any type. As mention on a previous post you will kill the
pump, if not now in a little while.
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MK9R
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| posted on 31/8/10 at 02:51 PM |
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don't stick it in a mondeo, you need the older style non common rail diesels. I ran a xsara on 50/50 mix with cooking oil for 1000's of
miles without a problem, but then asda cottoned on and the price of vegi oil went up to the same as diesel so not worth it any more. If you are using
waste vegi oil thats been used to cook with you first need to clean it, including removing all the water.
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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JoelP
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| posted on 31/8/10 at 06:45 PM |
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apparently you can add a touch of petrol to thin it a bit. The main thing is as said above though, is it new veg oil or used?
Deffo mix in a jar and see what happens - especially if you try to pour them seperate, if you see what i mean. Thouhg i myself would be very cautious
about trusting them to mix themselves.
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hillbillyracer
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| posted on 31/8/10 at 07:39 PM |
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Another thing to watch for apparently is when you start to use it the crap that's been on the bottom of your fuel tank no causing any problems
floats more in the veg oil & you go can through a few filters before it clears it through!
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