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Owen1183
Member Since: 19 Jun 2020
Location: Stafford
Posts: 35
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Hello, I have had a search and can't find any answers although i'm sure it must have been asked previously....
With the Fuel situation as it is (no fuel shortage, just brain shortage in the public)
Can you add cooking oil to the Disco fuel tank to extend the half tank I have in it currently?
Say 15L of the stuff?
Technically it should be fine, if its ok it might get me by for another day
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 29th Sep 2021 11:36 am |
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RogB
Member Since: 15 Jun 2018
Location: Mansfield
Posts: 1651
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i thought only the older basic common rail diesels could run off cooking oil/bio fuel ?
the more modern electronically controlled injection systems detect the fuel quality and it causes issues ?
i could be wrong though 2011 D4 XS 305 MY12 - gone but not forgotten
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| 29th Sep 2021 11:50 am |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12721
 
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^ ... you're not wrong.
FB is full of comments about using alternative fuels. gonna be some expensive mistakes made. .
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 29th Sep 2021 12:05 pm |
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lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
 
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In a nutshell if it is a common rail engine of any age avoid neat veg oil or anything that has a higher viscosity than normal derv, even non common rail it varies on what variety of injection system is fitted.
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| 29th Sep 2021 12:09 pm |
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Moon Rover
Member Since: 26 Aug 2021
Location: Swansea
Posts: 17
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My old 300TDI used to run fine on a 50/50 mix of diesel and veg oil, smelt like a chip shop mind. I wouldn't suggest running it in anything newer though.
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| 29th Sep 2021 2:30 pm |
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Lrstaylor
Member Since: 04 Oct 2018
Location: Kent
Posts: 590
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No you cannot put veg oil in your D3 or D4, I use to run our old nissan Terrano on svo neat no issues mechanicle pump and injectors any old Tdi will work fine. I also use to make my own bio but it was a messy business and the terrano worked well on svo so I got ride of my bio processor .
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| 29th Sep 2021 4:48 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12721
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agree ... 300tdi ran quite happily on the stuff. got to about 80% before it was an issue and that was only because I put the veg oil in the day before the diesel.
CostCo used to have a limit on how much veg oil you could buy because folks were running cars on it.
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| 29th Sep 2021 5:49 pm |
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M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8118
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ISTR 2% is the max that can be used in a D3, D4 0%, even bio diesel added at the pumps which ISTR is 12% maximum cannot be used in engines with a HP fuel pump. It can when others can't,
It will when others won't,
It goes where others don't.
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| 29th Sep 2021 7:43 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12721
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I think the "bio" in biodiesel is a different thing than adding veg oil to diesel ... sainsburys used to be (IIRC) 5% and may now be 10% on their "green" diesel pumps.
it's all down to viscosity and, I guess, effective molecule sizes. The modern (very)HP injectors can't cope.
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| 29th Sep 2021 8:32 pm |
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