The key word for searching is biodiesel.
I believe that standard diesel engines can run on a mix of up to 5%
vegetable oil in petroleum oil; in France I've heard that all diesel fuel
is already 5% vegetable, but I can't swear to that. 'Biodiesel' of that
sort is available in a very small number of filling stations in the UK.
It is also possible to convert a standard diesel engine to run on 100%
vegetable oil - exactly as sold for cooking, and including used cooking oil
that has been filtered. The cost of conversion is quite high though; more
than 1000 pounds, apparently. For high-mileage drivers it might be
cost-effective here in the UK, where standard diesel oil is about 4 or 5
times the cost of cooking oil from the supermarkets. The fuel duty is
still payable, and you'd have to declare the quantities used and pay the
tax, of course, but the savings could still be substantial. If you can get
used oil free from a fast-food shop and filter it yourself, the savings
would be even greater (even though you'd still have to pay the tax).
Sooner or later someone will have road-side pumps selling re-cycled cooking
oil for vehicle use, with the tax included in the price. Presumably some
sort of dye or smell will have to be added to identify the tax-paid fuel.
In the UK, diesel oil sold for industrial or heating purposes (ie not taxed
as road fuel) is dyed red, to trap tax-dodgers, but I don't think it would
be acceptable to dye all vegetable oil not sold as vehicle fuel!
Mr Diesel's original engines all ran on vegetable oil, and he foresaw that
this would become a significant advantage.
Message i.d.:< gurgled happily, sounding much like
Google tells me the Dutch don't check all that often. My tank has
never been inspected, ever.
Rumors tell that the coastline has a higher risk due to harbors and
agricultural markets should be avoided since farmers also can use the
other colour (taxfree) diesel.
The stories I hear speak of 50 till 75% of veggie oil.
From what I can find, the HDI engines can't cope with veggie oil. The
normal engines only have troubles when it's cold and when it's pure.
d:Johan; Certifiable me
http://www.aacity.net Citroen Newsgroup
Don't worry about it - a close relative has been running pure veggie in a
19TD Xantia for about 2 and a half years and no trouble whatsoever.
Not anymore they aren't. My source was tackled by them and the C&E and the
statement "so you want to prosecute me for the tax on a quarter tank of
veggie oil? What's that about 2 quid? I'll give you it now in cash if you
give me a receipt..." made them go away and never darken his door again.
Wrong! It is exactly that simple!!! Two and a half years of running
nothing but oil... No adjustments, no buggering about, just a funnel and a
serious brass neck to buy a trolleyfull at a time...
He's experimented with various types, sunflower, veggie and whatnot and has
settled on one in particular - I can't remember which though. I'll find out
and report back.
PS. Usual caveat applies - this has been done on 1.9 and 2.1 Citroen diesels
(turbo and non-turbo) and the positive results only apply to them.
Try this link http://www.dieselveg.com/conversion%20info.htm .
It's a two tank system using normal diesel for start up and stop down
so your pump is full of diesel at the critical points in the journey.
If you experiment let me know so I won't damage my car ;-)
bull of which there is but one in ten thousand. I am the wearer of The
Secret Girdle that once belonged to DE.
You can get a lot of information from this site.
Pure new vegetable oil is more viscous than normal diesel, so if used in too
high a concentration, can cause difficulty in cold starting. But it has a
high lubricating factor, so will not harm the pump. Nor will pure veggie oil
harm the seals, it is the alcohol which is added to the veggie oil to make
bio-diesel which can cause this problem.
General consensus is that up to 50% mix with normal diesel will cause no
running problems, but could well incur loss of vehicle if the appropriate
tax collecting body in your country find out.
Certainly, in the UK, HM Customs and Excise will confiscate the vehicle, but
they do normally allow you to buy it back!
Of course with the dual tank setup, which includes a heater to thin the
veggie oil, in the UK you can register with HM C&E and pay the appropriate
duty to them (on an honesty basis I believe). The duty on veggie oil is 20
pence less per litre than for normal fuel. And you help the environment, as
veggie oil is a renewable energy source.
You can also use old frying oil, but this requires a lot of filtering and
other treatment, see the link above.
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