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#731183 - 03/21/05 04:46 AM Re: used cooking oil in diesel engine?
PatrickW Offline

Registered: 03/19/05
Posts: 7
Loc: MN
Originally posted by medic:
Most people would just think he's nuts. I am one of the few people he can discuss this kind of thing with.

Such is the case with many of the leading thinkers throughout human history.

He sounds like a very interesting man. Update us after a while and let us know how the WVO adventure is going...

- Patrick

#731184 - 04/15/05 11:32 AM Re: used cooking oil in diesel engine?
medic Offline

Registered: 02/28/03
Posts: 1735
Loc: Bradford, Commonwealth of Penn...
Okay, I got an email about a week ago from my dad. He helped my cousin move from Albany. NY to Jamestown, NY. I will quote his email. BTW, LV stands for Little Valley, NY, not LasVegas.

Went from LV to Albany NY, picked up a enclosed U-Haul trailer, loaded it with Lindsay's stuff and hauled it back to Jamestown. Trailer was full, trunk was full and back seat was full. High gear, cruse control set at 70 mph, all the way back with the loaded trailer. Dropped down to 60 on one hill. Switched off the veggie at Salamanca exit with a total of 700 miles on about 17 gallons wvo. About 41 mpg. If I was not pulling the trailer, bet I would have been up about 48 to 50 mpg. Have enough diesel left in the diesel tank to go back to Albany and return, not pulling a trailer.

The VW pulled the hills like there was nothing behind it.

#1401083 - 03/12/09 05:13 PM Re: used cooking oil in diesel engine? [Re: medic]
caprice_2nv Offline

Registered: 12/04/05
Posts: 531
Loc: Ontario Canada
I think most people are just scared to do this kind of thing. I haven't done any real research but have seen enough on tv shows and through a friend who had done his homework to consider doing it myself. My only problem is I live in an appt and don't have room to store the veggie oil. I drive enough miles that it would be worth it to me to put some money into getting this going.

I think my vehicle of choice would be a mid 80's Olds Delta 88 diesel 350, since I have so many parts that fit those cars. Maybe I could even convert my gas 307 Delta 88 that I already have over to the diesel engine. The later diesels didn't have the head bolt problems that the earlier ones did, and besides that issue most problems were due to customer error.
84 Olds Cutlass - 350 Olds
83 Chevy Caprice - 305 Sbc
79 Honda CX500

#1403499 - 03/14/09 11:58 PM Re: used cooking oil in diesel engine? [Re: caprice_2nv]
Shannow Online   content

Registered: 12/12/02
Posts: 34120
Loc: Oz
If you've got a bosch inline pump, you are laughing.

The (Lucas Style) IP in my Nissan is $4,800 if I mess it up and ruin the thrust bearings.
2003 Navara 3.0Di - Edge 5W30/25W50
1997 Caprice L67 - Magnatec Stop Start 10W30

#1425186 - 04/04/09 08:29 PM Re: used cooking oil in diesel engine? [Re: Shannow]
wileyE Offline

Registered: 11/18/04
Posts: 1967
Loc: Kitsap, WA
Even the switch to 20% bio diesel where I work and is clogging filters before service intervals are due. Can't imagine trying to deal with pure veggie oil, other than how hard it is to clean off a fry pan when it gells?

#1426168 - 04/06/09 04:42 AM Re: used cooking oil in diesel engine? [Re: wileyE]
Shannow Online   content

Registered: 12/12/02
Posts: 34120
Loc: Oz
I think that the crux of your issue is...switch to 20%.

I think that the esters might be cleaning out tanks and oxidised rubber fuel lines etc. after running dino.

Either that, or your bio has soaps/glycerine in it.

Using WVO is a very customised approach to running a vehicle, you need to be on top of your game completely.
2003 Navara 3.0Di - Edge 5W30/25W50
1997 Caprice L67 - Magnatec Stop Start 10W30

#1801113 - 03/02/10 06:17 PM Re: used cooking oil in diesel engine? [Re: Shannow]
Gearstix Offline

Registered: 01/12/10
Posts: 37
Loc: Canada
I have an idea on how to keep your tank of WVO warm...
Where I live, not sure about you guys in the warmer parts of Canada/USA, in the winter it dips down to -41*C/-41*F regularly, and it does get colder than that. We have block heaters that you plug into the wall.

Maybe you could use a block heater or a magnetic oil pan heater if the tank is metal.

I would be interested in doing this in my truck if I do a diesel swap.

#1851467 - 04/09/10 08:22 PM Re: used cooking oil in diesel engine? [Re: wileyE]
badnews Offline

Registered: 07/31/03
Posts: 848
Loc: Ohio
During Katrina I knew a guy that would mix (clean) Veg Oil in with his diesel fuel to strech it due to limited supply

He suffered no ill affects with his Ford engine

This was a emergency but he continued the experiment to see what would happen and he did not incur big problems

Edited by badnews (04/09/10 08:23 PM)
The thin oil is better thoughts often expressed here are not doing your engine any favors

#1860911 - 04/17/10 11:59 AM Re: used cooking oil in diesel engine? [Re: badnews]
Kestas Offline

Registered: 06/04/02
Posts: 11472
Loc: The Motor City
I've read stories where in Europe, the price of diesel fuel was sometimes higher than cooking oil. The savvy owner would buy his fuel from the supermarket.

WVO has become so popular, that places like San Francisco now have less WVO that there are people who want it. I believe the city has contracts with many restaurants to provide WVO for their city vehicles.

#1861016 - 04/17/10 01:56 PM Re: used cooking oil in diesel engine? [Re: wileyE]
labman Offline

Registered: 03/14/03
Posts: 8711
Loc: Nothern USA
You could look at electric water heating elements for heating the drum of grease. I would select a low wattage 240 one and run 120V. It may screw right in the bung, or perhaps with a bushing.

#3422783 - 07/12/14 04:17 PM Re: used cooking oil in diesel engine? [Re: medic]
sixtwoturbo Offline

Registered: 01/28/14
Posts: 33
Loc: Abbotsford, BC
For heating his drum, get one of those heating wraps, I use one in the winter for "drying" out my WMO and they work great.

Grease car should sell them and of course, Ebay. They average $120.
1984 G20 Get A Way van, 6.2 diesel with a remote mounted turbo-HX35 with a billet 60mm HX40 comp wheel, 20 psi, running waste fuels and jet fuel.

#3503048 - 10/05/14 05:55 PM Re: used cooking oil in diesel engine? [Re: medic]
m37charlie Offline

Registered: 06/08/09
Posts: 1275
Loc: Alaska
I would recommend relatively frequent lube oil changes, since WVO that gets into the lube oil reacts to form solid "goo" that will eventually cause bearing failure if not noticed.
At least keep a very close eye on viscosity. Use one of the cheaper lube oils like dino Delvac 1300 15W40 or Supertech 15W40.


Edited by m37charlie (10/05/14 05:57 PM)
05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
88 Toyota OJ50LV OM314 motor D1 SHC
52 Dodge M37/Hercules diesel

#3503066 - 10/05/14 06:14 PM Re: used cooking oil in diesel engine? [Re: medic]
2004tdigls Offline

Registered: 10/31/11
Posts: 332
Loc: maple ridge, bc
Originally Posted By: medic
While eating Thanksgiving dinner with my parents today, my dad told me he is getting his '97 Passat TDI converted to run on used cooking oil. This consists of a 15 gallon tank in the trunk and some hoses running from the coolant system into the tank to warm the cooking oil. He said he will have to run the first 5 miles on diesel and then when the cooking oil is warmed up he can switch over.

He told me that there are limited cooking oils that can be used and canola oil is prefered. He has already set up a deal with a local restaurant and a grocery store so he can pick up their used cooking oil. All he has to do is filter it with a regular water filter that you find under a kitchen sink. One filter lasts for 50 gallons. He figures, with the current price of diesel, that this system will pay for itself in 3 months and after that it's money in his pocket.

He has also been told that the cooking oil will clean his injectors and other fuel related parts of his engine.

<small>[ November 25, 2004, 11:28 PM: Message edited by: medic ]</small>

its suicide for your tdi,

just search the threads, lots of dead cars there

#3562641 - 12/11/14 04:40 PM Re: used cooking oil in diesel engine? [Re: medic]
L_Sludger Offline

Registered: 10/04/09
Posts: 2675
Many moons ago I read about how people were buying new vegetable oil or cooking oil for their converted diesels. They'd get the oil from a store. Somehow, it was cheaper than diesel fuel, so it was a nice way to circumvent the road tax. Not sure about the reality of it though.

#3562751 - 12/11/14 06:41 PM Re: used cooking oil in diesel engine? [Re: medic]
Shannow Online   content

Registered: 12/12/02
Posts: 34120
Loc: Oz
UK and Europe they are, as diesel is so expensive.

So successful, that the law is now that you have to register with their version of the IRS and pay excise on the vegetable oil.

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