jhanananda
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![[*]](./images/onepoint9/default_icon.gif) posted on 7-12-2009 at 03:13 PM |
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Does gasoline in the VO blend float, separate or settle out
A lot of people who do not blend think that V oil and gasoline are going to separate in the fuel tank and cause problems with the automobile, but in
late 2005 I made a blend of 80% WVO and 20% gasoline (petrol) and left it on the shelf of a friends shop. When I examined it two years later the
gasoline and VO still had not separated.
In communication with Daniel E McAmoil (AKA oil crusher or sodbust) I found that he blends gasoline (petrol) with sunflower oil prior to running it
through his centrifuge. He finds the centrifuge works better with the oil thinned out, but the gasoline and sunflower oil do not separate in his
centrifuge. Therefore if time and a centrifuge cannot separate a blend of gasoline (petrol) and vegetable oil, then why should we assume they will
separate in the fuel tank?
“Miscibility
From Wikipedia, the free encyclopedia
In chemistry, miscibility is the property of liquids to mix in all proportions, forming a homogeneous solution. In principle, the term applies also to
other phases (solids and gases), but the main focus is on the solubility of one liquid in another. Water and ethanol, for example, are miscible since
they mix in all proportions.
By contrast, substances are said to be immiscible if in some proportion, they do not form a solution. For example, diethyl ether is fairly soluble in
water, but these two solvents are not miscible since they are not soluble in all proportions.
Organic compounds
In organic compounds, the weight percent of hydrocarbon chain often determines the compound's miscibility with water. For example, among the alcohols,
ethanol has two carbon atoms and is miscible with water, whereas octanol with a C8H17 substituent is not.
Octanol's immiscibility leads it to be used as a standard for partition equilibria. This is also the case with lipids; the very long carbon chains of
lipids cause them to almost always be immiscible with water. Analogous situations occur for other functional groups. Acetic acid (CH3COOH) is miscible
with water, whereas valeric acid (C4H9COOH) is not. Simple aldehydes and ketones tend to be miscible with water, since a hydrogen bond can form
between the hydrogen atom of a water molecule and the unbonded (lone) pair of electrons on the carbonyl oxygen atom.
Determination
Miscibility of two materials is often determined optically. When the two miscible liquids are combined, the resulting liquid is clear. If the mixture
is cloudy the two materials are immiscible. Care must be taken with this determination. If the indexes of refraction of the two materials are similar,
an immiscible mixture may be clear and give an incorrect determination that the two liquids are miscible.”
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e3msb
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| posted on 7-12-2009 at 09:53 PM |
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Does gasoline in the VO blend float, separate or settle out.....
NO! not once its mixed.
e3msb[steve] 96 disco 300. bio 100. Cit ZX. wvo/mix. PUG405 wvo/mix. Vintage JCB3c GT. bio. home/cent heating,wvo/glyc-oil. Linde forklift 3cyl
Deutz WVO. Petter twin diesel 7kva generator, bio and wvo. Dennis fire engine 1971. 5.8 perkins T6354 historic vehicle, bio. IF YOU HAVE GAINED
KNOWLEDGE OR BEEN AMUSED BY THE ANSWERS GIVEN PLEASE MAKE A SMALL DONATION TO THE FORUM
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hifly
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| posted on 7-12-2009 at 10:47 PM |
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I thought it was common knowledge that they blended.
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slabster
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| posted on 7-12-2009 at 11:07 PM |
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What happens to the petrol when it interacts with heated surfaces?
Uncle Slabs
*2000 Vauxhall Combo Club 1.7D Purflux Heated Filter. FAME and veg blends
*1996 VW Passat 1.9 Tdi \'IZ\' XXXFOR SALEXXX £200 Spares or repair.
Suppliers of the best quality Biodiesel that stays fresher in your fuel tank: http://www.cambridgebiodiesel.org |
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Jehu
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| posted on 8-12-2009 at 01:47 AM |
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The petrol doesnt separate from the mixture but it evaporates quick enough from it if its in an open container. (Serious fire hazard in that case.)
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wilc
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| posted on 1-2-2010 at 01:54 AM |
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been mixing wvo with petrol in jerry can, roll the can for many times to try to mix then pour it in the tank with wife holding a funnel, top oil
always appear runny like water then near the bottom oil is thicker i can see as the oil going into the funnel from the jerry can, even my wife can
notice that. why does that happen?
WVO on 94 Delica L300 2.5TD Single Tank
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bobblake
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| posted on 1-2-2010 at 10:35 AM |
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You are not mixing it enough.
Try mixing 1/2 a can at a time.
Also easer to lift
bob
1996 Pajero Exceed 2.8 auto
EGR plate fitted 07
Was using wvo 95% 5% rug
30ml acetone per 20 Lt
22.9 MPG on WVO (2008)
Not all my 5pelling mistakes are unintentional
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jhanananda
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| posted on 1-2-2010 at 01:53 PM |
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Actually wilc, you do not want in your fuel tank what does not mix readily, so there is no reason to do a lot of agitation of your petrol/WVO blend,
because I have found what precipitates out tends to glue one's injector pump shut and rusts the fuel tank through. So, blend externally as you are
doing, then either drain off that bad stuff on the bottom, or pour off the top the good stuff. Also, you might as well do your blending before
filtering, because doing so will save your filters. The junk readily precipitates out and can be chucked into a barrel and some of the good stuff can
be rescued when it floats to the top.
Also, no amount of agitation will blend gasoline (petrol) with animal fat. So, some of that crud on the bottom of your mixing can could be animal
fat. Again, in the winter you do not want animal fat, so blending is another easy way to separate out the animal fat from your WVO, so you can save
it for the summer months when it will be liquid on warm days.
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tttonyyy
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| posted on 1-2-2010 at 02:21 PM |
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Top tip! 
Even with the bio if I've messed up a batch, sticking in petrol will cause things to drop out if left for 24h... the rest has been fine for fuel.
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e3msb
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| posted on 1-2-2010 at 03:42 PM |
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mixing a small amount of petrol in vegoil or bio, only increases the flash point a bit, sort of like having methanol in glycerine, where if it has 30%
in it you can light a little flame on top of it with a match, but if there is only 20% in it, then you cant light it without a wick.
e3msb[steve] 96 disco 300. bio 100. Cit ZX. wvo/mix. PUG405 wvo/mix. Vintage JCB3c GT. bio. home/cent heating,wvo/glyc-oil. Linde forklift 3cyl
Deutz WVO. Petter twin diesel 7kva generator, bio and wvo. Dennis fire engine 1971. 5.8 perkins T6354 historic vehicle, bio. IF YOU HAVE GAINED
KNOWLEDGE OR BEEN AMUSED BY THE ANSWERS GIVEN PLEASE MAKE A SMALL DONATION TO THE FORUM
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wilc
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| posted on 1-2-2010 at 06:01 PM |
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hi jhanananda thanks for your advice, but i didnt understand some part from your post, i put 20L filtered WVO to 1 micron in my jerry can and add 5%
petrol to mix, then pour into the fuel tank on my van thats what i normally do, you suggested that i should drain off the 1 micron filtered WVO the
"bad Stuff"?? is that what u mean? but they are settled and filtered already and in golden colour although its a bit thicker than the top oil in the
jerry can. may be i should mix it better and check next time.
and my another question is if i premix WVO with 5% petrol in my barrel before any settling and filtering and waiting for me to consume them, will that
5% petrol still be in the final oil ? wont they just evaporated?i store my filtered oil in a normal water butt so its not air tight, and my settling
tank is open top with curtain filter secured on the top.
thanks again guys
Wil
| Quote: | Originally posted by jhanananda
Actually wilc, you do not want in your fuel tank what does not mix readily, so there is no reason to do a lot of agitation of your petrol/WVO blend,
because I have found what precipitates out tends to glue one's injector pump shut and rusts the fuel tank through. So, blend externally as you are
doing, then either drain off that bad stuff on the bottom, or pour off the top the good stuff. Also, you might as well do your blending before
filtering, because doing so will save your filters. The junk readily precipitates out and can be chucked into a barrel and some of the good stuff can
be rescued when it floats to the top.
Also, no amount of agitation will blend gasoline (petrol) with animal fat. So, some of that crud on the bottom of your mixing can could be animal
fat. Again, in the winter you do not want animal fat, so blending is another easy way to separate out the animal fat from your WVO, so you can save
it for the summer months when it will be liquid on warm days. |
[Edited on 1-2-2010 by wilc]
WVO on 94 Delica L300 2.5TD Single Tank
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jhanananda
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| posted on 2-2-2010 at 01:11 PM |
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Hello Wil, water and other contaminants that are liquid will filter down to the lowest micron you can find, and if you add your solvent to your WVO in
your fuel tank, then those insoluble in petroleum distillates, which are contaminants, will precipitate out and accumulate at the bottom of your fuel
tank, then get sucked up in mass into your injector pump and glue it shut.
Yes, gasoline (petrol) in your WVO will evaporate over time. So, sure, let your WVO sit around settling in your storage as long as you do not need it,
but then when you are ready to use it, do not filter it first, but drain off the bad stuff off the bottom, then add gasoline (petrol) to it, and let
it settle for a few more hours to one day, then drain off the contaminants that will accumulate again on the bottom of your tank, or pump off the
clear WVO-blend off the top and filter it to whatever micron you want. Doing so will save your filters and your injector pump.
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e3msb
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| posted on 2-2-2010 at 06:43 PM |
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It will take a long time for petrol at 5% to evaporate from an open tank once it has been well mixed. Most of us add the petrol to the oil at the end
of filtering, and give it a good mix by hand or shaking the container, but it must be at a decent temperature, say above 12c. If you mix it in an open
container, then you will see the obvious thinning that it does, and even more so at 10%. We use 5% all year round, and 10% in winter. Basically, the
colder the weather, and the more fats re solidify, so the petrol acts as a solvent and dissolves them again. This is all presuming you have filtered
your oil well to start with, and any animal fats and contaminates that would have caused problems will have been removed. Also, long term settling
will take these fats and stuff to the bottom, so you can skim off good veg oil from the top, and save the life of your filters.
e3msb[steve] 96 disco 300. bio 100. Cit ZX. wvo/mix. PUG405 wvo/mix. Vintage JCB3c GT. bio. home/cent heating,wvo/glyc-oil. Linde forklift 3cyl
Deutz WVO. Petter twin diesel 7kva generator, bio and wvo. Dennis fire engine 1971. 5.8 perkins T6354 historic vehicle, bio. IF YOU HAVE GAINED
KNOWLEDGE OR BEEN AMUSED BY THE ANSWERS GIVEN PLEASE MAKE A SMALL DONATION TO THE FORUM
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