I found a rancid quart of vegetable oil in my camper.

Since I don't want to cook with it would it be ok to burn it in the 1983 300SD, mixed with a full tank of diesel?

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1st MBz: 1982 300SD
2nd MBz: 1987 300SDL
3rd MBz: 1995 S420
4th MBz: 1987 190DT
5th MBz: 1984 300SD w/1983 300DT engine
6th MBz: 1999 C230k I'm 3rd owner, got it w/57,235 miles.
and manages Mom's 2007 R320 CDI

don't, if you don't want to waste it just turn it into soap

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1993 MB 300D 245K died.

Do the math.
A quart of diesel cost $1.00.

Would anything go wrong.
Probably not.
Can I guarantee nothing will go wrong.
No.

Is it worth a $1.00 to find out?

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Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO

I've done it, it was fine. Vegetable oil (AKA soybean oil) has very good lubricity property. Some people use it instead of TCW3 in diesels.

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CENSORED due to not family friendly words

Yeah, you can do that. No biggie. Virgin veggie oil burns well when diluted by D2.

I actually ran almost straight veggie in my '85 recently. The tank was very low on D2. Wanted to make a few stops before hitting the gas station. Decided to give it a whirl, and I poured in a gallon of veggie oil.

Ran great. I was amazed at how quiet the injectors got. I thought the engine had quit on me when I pulled up to the first stop light after leaving my house. Some real good lubricity.

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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino

http://i.imgur.com/LslW733.jpg

The Baja Arizona Oil Burners Send a message if you'd like to join the fun
Left to Right - UberWasser, Iridium, Stuttgart-->Seattle,, mannys9130

Visit the W123 page on iFixit for over 70 helpful DIY guides!

you don't how much water and other crap is in it, WVO is normally filtered, heated if there is any question of water and settled.

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1993 MB 300D 245K died.

Yes, when running a full tank of straight WVO. Absolutely.

This is virgin oil, and it is 1 qt. That's approx an 80/1 ratio of diesel to veggie oil.

Any water that may happen to be in 1qt of old virgin veggie oil will separate in the spin on filter.

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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino

http://i.imgur.com/LslW733.jpg

The Baja Arizona Oil Burners Send a message if you'd like to join the fun
Left to Right - UberWasser, Iridium, Stuttgart-->Seattle,, mannys9130

Visit the W123 page on iFixit for over 70 helpful DIY guides!

For the purists, a big fat NO. If it was me, I do it in a heartbeat.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

This seems to be a very emotional topic.

It makes for an interesting thread.

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.
1st MBz: 1982 300SD
2nd MBz: 1987 300SDL
3rd MBz: 1995 S420
4th MBz: 1987 190DT
5th MBz: 1984 300SD w/1983 300DT engine
6th MBz: 1999 C230k I'm 3rd owner, got it w/57,235 miles.
and manages Mom's 2007 R320 CDI

you might need to put some biocide in the oil because it can leave a few million algae here or there.

Why not just heat it to 250 degrees for 10 minutes, filter it, then use it?

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Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6

I know its a lot of effort, but you can always just toss it in the trash...

If you afraid of the eco terrorist finding in your garbage, wrap it in a paper bag and secretly bury it in the back yard at 3am

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or just fer grins make BioD in a 2 liter bottle with it.

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1993 MB 300D 245K died.

pour it in your tank and forget about it.

i almost ran out of fuel today looking for an open diesel station, and bought 2 gallons of vegetable oil at a supermarket as insurance since i managed to find one of those in search for diesel.

finally found a diesel pump and fired the 2 gallons of oil in to get rid of them. the 9th circle of hell did not swallow me, and freddy kruger didnt come to slash me to ribbons.

this versatility is exactly why these cars kick a$$

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Clean virgin oil straight from the bottle will be nothing but absolutely ok to burn as fuel.

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"

I've used 1-2qt of vegetable oil to a full tank and the fuel system is still perfectly fine. Even 1qt to a tank can reduce engine noise substantially. The lubricity qualities of soybean oil are hard to beat unless you own a chemical plant.
http://www.biodiesel.org/reports/19980201_gen-070.pdf


All biocides on the market are 85% diethylene glycol methyl ether aka Carbitol, a solvent commonly found in paint, wood stains and household cleaners. Any pure alcohol in small quantities will kill algae without affecting the quality of the fuel. I've had my tank open when working on the fuel level sender and there was perfectly clean metal all around.

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CENSORED due to not family friendly words