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Brewno
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  • Register:07/11/2003 04:05:20

Date Posted:28/11/2003 07:33:22Copy HTML

Does anyone know anything about running diesel engines on vegetable oil ? Is it possible ? If so how ? What are the pit falls ? I do hope i'm not having my dodgy leg pulled !!
TheBarrelShifter Share to: Facebook Twitter MSN linkedin google yahoo #1
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  • Register:05/10/2003 07:10:32

Re:Vegetable Oil

Date Posted:30/11/2003 06:55:33Copy HTML

I ran my Dodge S46 with Perkins 4.236 on vegetable oil for some time.

All you need to do is pour pure vegetable oil straight into the tank - It doesn't matter how much diesel is already in there, you can use it in any ratio with diesel.

At this time of year, however, you need to be careful - Vegetable oil is much more viscous than diesel, and added to this, at low temperatures (around freezing) it solidifies.  This happened to me one March morning up in Lancashire - My Dodge started fine and drove for about 400 metres before giving up.  Had to bleed the system all the way from the tank to the injectors to get it going again which is a bit of a pain.  If you lived in Canada you would notice similar problems with diesel itself which starts to solidify around -20 degrees celcius.  Increasing the amount of diesel in the diesel/veg oil mixture can help, although is not failsafe.  Some people put a cup of petrol in too which is supposed to keep things liquid.

The only real solution is to fit another fuel tank for veg oil (Or only use veg oil in the summer).  There's loads of information on the net about converting diesel vehicles to run on veg oil.  These conversions are all just another fuel system for the vegetable oil, some with elaborate intercoolers which heat the vegetable oil with the hot coolant as it comes out of the tank to make it less viscous.  Most systems incorporate a switch which allows you to switch from diesel to veg oil and back again when you wish.  With most two tank systems it is recommended that the vehicle be started on diesel then switched to veg oil then before stopping the engine switch back to diesel and let it run for a bit before switching off.  This is so that diesel is left in the pipes and injector pump rather than veg oil which could solidify and therefore not flow.

As an aside, you may think it is a convenient coincidence that your diesel engine will run essentially without modification on vegetable oil.  However, the diesel engine itself was developed and prototyped by Mr Diesel on peanut oil.  It was not until after Mr Diesel's strange and suspicious death aboard a ferry in the English Channel that oil companies found that a fraction of oil from the fractionation process used to make petrol worked equally well.  The only reason your diesel engine needs modifying at all to run on vegetable oil is because during the past 80 years it has been optimised to run on the less viscous fuel commonly known as diesel.

Try it, you won't do any damage (except if it is very cold, or your Dodge is actually a petrol).  One other thing I noticed about running on veg oil was that the vehicle takes a while longer to start - With straight diesel my Perkins starts almost instantly on turning the key - With veg oil I found that I would have to keep the starter motor turning and the engine would gradually pick up speed and start burning the veg oil, sometimes it could take 15 seconds which is probably not very good for the starter.  Also a lot of white smoke issues from the exhaust when starting on veg oil, and more white smoke is evident at traffic lights too - I've heard that to optimise a diesel properly for veg oil a slight retardation of the timing is required - Perhaps this would help.

 

 

Mark 1 Dodge 50 S46 called Vince
wot dodge Share to: Facebook Twitter MSN linkedin google yahoo #2
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  • Register:08/12/2003 05:00:30

Re:Vegetable Oil

Date Posted:09/12/2003 05:39:14Copy HTML

Silly really, but I was watching top gear a few months ago, (yea, we get BBC in Holland!).  There, they did the old veg. oil trick on a modern car, no problem.  They recomended using old used oil (from a chippy or something, mixed with (can't quite remember) 1 - 5% white spirit (alcohol), shake, leave a couple of days, then go for it.  I suppose the spirit improves combustion.  Not tried it though. Apparently, you get the smell of the oil, (chips n fish etc.) in your exhaust smoke, which could be a laugh!! 
wot dodge Share to: Facebook Twitter MSN linkedin google yahoo #3
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Re:Vegetable Oil

Date Posted:13/12/2003 07:40:51Copy HTML

 Just remembered, 1% spirit in the old chip fat. (Or shiny new veg. oil.)
Karrier Share to: Facebook Twitter MSN linkedin google yahoo #4
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  • Register:02/10/2003 09:22:56

Re:Vegetable Oil

Date Posted:20/03/2004 12:26:10Copy HTML

Did you try runnng yours on vegetable oil?

If so, how did you get on?

"Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." Douglas Adams
pen_nomad Share to: Facebook Twitter MSN linkedin google yahoo #5
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Re:Vegetable Oil

Date Posted:20/03/2004 05:21:24Copy HTML

Ran my dodge bus all last year on veg oil. You can buy it at the garages in Denmark, and in Germany it's refined slightly and called Bio-diesel. I fitted a split system using the big main tank for the oil + a smaller tank for deisel which i used for starting then switching to the oil when the motor was warm

It worked ok + THEORETICALLY causes no problems, though there were warnings connected with Lucas injector pumps

P.S. Dont think there was any connection, but my injector pump locked up and completely trashed my motor six months later ??????????

Karrier Share to: Facebook Twitter MSN linkedin google yahoo #6
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Re:Vegetable Oil

Date Posted:20/03/2004 04:52:02Copy HTML

Reply to : pen_nomad

Ran my dodge bus all last year on veg oil. You can buy it at the garages in Denmark, and in Germany it's refined slightly and called Bio-diesel. I fitted a split system using the big main tank for the oil + a smaller tank for deisel which i used for starting then switching to the oil when the motor was warmIt worked ok + THEORETICALLY causes no problems, though there were warnings connected with Lucas injector pumpsP.S. Dont think there was anyconnection, but my injector pump locked up and completely trashed my motor six months later ??????????
"Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." Douglas Adams
Karrier Share to: Facebook Twitter MSN linkedin google yahoo #7
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Re:Vegetable Oil

Date Posted:20/03/2004 04:53:45Copy HTML

Thank you for your rapid response and the information that you went the two-tank route.  What did you say when the pump trashed the engine, or can’t you put that into print?

 fficeffice" />

Has anyone tried used cooking oil? – Ex-chippie? - Ex-greasy spoon?    I can get all I want, and get thanked for taking it away.

"Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." Douglas Adams
Karrier Share to: Facebook Twitter MSN linkedin google yahoo #8
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Re:Vegetable Oil

Date Posted:20/03/2004 04:55:47Copy HTML

What's - "ffice" etc - anyone?
"Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." Douglas Adams
Oric Share to: Facebook Twitter MSN linkedin google yahoo #9
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Re:Vegetable Oil

Date Posted:21/03/2004 12:13:43Copy HTML

Reply to : jammydodger

What's - "ffice" etc - anyone?

I think that's what happens if you compose you're reply in Microsoft Word (Office) and then cut and past it into aimoos reply window.

Heppens to me as I hif too cheque my speling a lot!!!!

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Karrier Share to: Facebook Twitter MSN linkedin google yahoo #10
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Re:Vegetable Oil

Date Posted:22/03/2004 02:20:28Copy HTML

Reply to : Oric

Reply to : jammydodgerWhat's - "ffice" etc - anyone?I think that's what happens if you compose you're reply in Microsoft Word (Office) and then cut and past it into aimoos reply window.Heppens to me as I hif too cheque my speling a lot!!!!
Thnaks Oric
"Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." Douglas Adams
Karrier Share to: Facebook Twitter MSN linkedin google yahoo #11
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Re:Vegetable Oil

Date Posted:24/03/2004 02:44:54Copy HTML

I reckon that

http://autoinfozone.com/vegoil.html

is a good site to find out how to run your Dodge on old chip oil.

.fficeffice" />

From the way I read it: -

·    Old chip oil and old greasy spoon oil are the tops

·    Filter it

·    Add 3% white spirit (the stuff you use to gloss paint brushes rather than alcohol)

·    Leave it a week.

·    Pay the tax to the Inland Revenue.

·    Save a pretty penny

·    Save the world

·    Make a chippie happy

"Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." Douglas Adams
jabbathehut Share to: Facebook Twitter MSN linkedin google yahoo #12
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  • Register:06/08/2008 12:40:25

Re:Vegetable Oil

Date Posted:14/09/2008 12:22:52Copy HTML

Hey, Jammie Dodger

As I understand it, if you use home made bio diesel, or vegoil for your own use,
you don't have to pay the 26p/litre tax to the taxman

Perhaps Chug could confirm this, as he's more 'professional' than most, I think?

Only warning you see repeatedly is not using vegoil without thinning by heating, or leaving it in the pump,
causing pump damage

Tax is not the problem - search the web, as I have seen copies of an email from the taxman available for showing Police etc - though I haven't done it yet!

Jabba
I see my elephant repellent is working - there aren't any elephants posting :)
jabbathehut Share to: Facebook Twitter MSN linkedin google yahoo #13
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Re:Vegetable Oil

Date Posted:14/09/2008 12:31:33Copy HTML

Found it!

2500 litre limit on home produced vegoil/biodiesel before tax eligibility, apparently!!

http://www.mbclub.co.uk/forums/showpost.php?p=388932&postcount=19

Jabba
I see my elephant repellent is working - there aren't any elephants posting :)
Karrier Share to: Facebook Twitter MSN linkedin google yahoo #14
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Re:Vegetable Oil

Date Posted:14/09/2008 05:01:03Copy HTML

The tax went up to about 49p a while back, but with 2500L to play with tax free.......

The Bosch fuel pumps on the MK2 are best for veg oil, the CAV / DPA pumps on the 4.236 and 6.247 don't like veg oil over 50%.

That url you posted, this is a live link to it CLICK HERE
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