Has anyone had any experience in running used motor oil as an alternative fuel? Im talking more than adding a few qaurts every tank-full. Such as a 50/50 blend or even 100% used motor oil. We made a homemade used motor oil furnace for our garage, and it worked great so we finally invested in a clean burn. Well with over 500galons of used motor oil sitting around and more coming I got to thinking this would be nice to run in a diesel rabbit or mercedes. Any ways any comments or sharred experience would be great.

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1987 300D(Erma)- #14 head, 193k
2003 TDI Beetle sold
1985 300sd sold
1987 300D(Ursala)- #14 head, 157k when sold
1987 300D(Wilbur)- #14head, 356,000+miles, sold after 7 days of owning it.
1992mercedes 300d- totaled and in a junk yard somewhere..
1983 mercedes 300sd- scrapped
1980 mercedes 300sd first mercedes diesel-sold

unless you have a centrifugal filter setup, the particulates in UMO are pretty harsh to an IP. I'd not recommend putting it in an MB. a rabbit could be more forgiving, or easier to replace...

I've not run motor oil, but the emission from a high blend of oil will be really bad. Think about when your car burns a little oil and the blue smoke. If you're burning high quantities motor oil all the time your going to be bellowing out smoke all the time. Send your use oil to the recyclers and let them work their magic on it.

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Well I thought about the smoking issue, but out homeade waste oil furncae has very little visible smoke comming from its chimney. Also I had no intentions of doing this to a nice car, I was thinking like a less than $500 rabbit or 617 engined mercedes that would not be the end of the world if it didnt work out.

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1987 300D(Erma)- #14 head, 193k
2003 TDI Beetle sold
1985 300sd sold
1987 300D(Ursala)- #14 head, 157k when sold
1987 300D(Wilbur)- #14head, 356,000+miles, sold after 7 days of owning it.
1992mercedes 300d- totaled and in a junk yard somewhere..
1983 mercedes 300sd- scrapped
1980 mercedes 300sd first mercedes diesel-sold

I'm an HVAC contractor, and the waste oil furnaces have 12psi air injection pumps, in addition to the forced air combustion tunnel, and the nozzle designed for burning waste oil. also, they have heated oil filters to promote a clean burn. your car will not have any of these things.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

While it will burn in your diesel engine- it's much better sent to the recycler. It smells horrible also.

I've run it at between 10% to 25%.Burns good,even more mpgs.However it stinks bad,I use gasser used oil.Used diesel oil is too black,and hard to see primary filter.I mix oil at 50% diesel then filter twice thru blue jeans.
Be careful of some oil with water or antifreeze from leaking heads.Filtering is done best at below freezing temps.
WATF is rocket fuel to a diesel engine,again at 25%.
This year I will add a bag of charcoal to my filters and see if stink goes away.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

The guys w/ the old Ford IDIs have been doing it w/ success....as stated aboved make sure you filter it really well...the exhaust fumes do stink pretty bad....use at your own risk, but it will work.

If you send it to the recyclers it will just get burned at asphalt plants or in big ocean going ships...why not recycle it yourself by burning small quantities in you own diesel vehicle...its going to get burned reguardless.

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1981 240D

I experimented with a 50/50 mix in my SD. Ran fine, smoked a little more. I got too concerned with fine particulate(metal) so I stopped. It was nice not having to pay for fuel.. I could make off with a few gallons of diesel from work here and there. If I had a centrifuge I would not hesitate to do it again. But only on my SD and perhaps my TD... I would never run "black diesel" in my om603.

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08 R320 CDI current

Past
95 E420
87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D

This is something you hear about over on the VW boards, apparently. There are one or two guys who say they run their pre-TDi VW diesels on 100 percent used oil and claim they have done 100,000-plus miles with no problem.

I find that hard to believe.

As oil is recyclable to start with, I don't see how adding used oil to one's tank qualifies as an alternative fuel: It's certainly not going to be cleaner-burning than petrodiesel, and as it's fully recyclable you aren't diverting anything from the waste stream.

Cheers

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

Im more in it for the saving money aspect not necessarily the green side. However if I send it to the recycler I have to pay to get rid of it around here, and I have the emisions from driving it there, and then them trasporting elsewhere. Versus me just keeping it. Regardless were keeping it because that is how we heat our garage and eventually our home. I was just toying with the idea.

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1987 300D(Erma)- #14 head, 193k
2003 TDI Beetle sold
1985 300sd sold
1987 300D(Ursala)- #14 head, 157k when sold
1987 300D(Wilbur)- #14head, 356,000+miles, sold after 7 days of owning it.
1992mercedes 300d- totaled and in a junk yard somewhere..
1983 mercedes 300sd- scrapped
1980 mercedes 300sd first mercedes diesel-sold

Burning Used M.O.
You're just racking up UBER Expensive repair bills @ the Injection Shop on the
I.P. IN ADVANCE!

Who, in the name of all that's sensible,would take the Dross out of the Sump
and place it in the Fuel Tank?

How much is a New Secondary Filter? ' "Garanteed" you'll double your filter
usage...AND that's only 10 microns NOMINAL.The Junk in UMO is metal particulate matter in the nano microns.(Think, Jeweler's Rouge)

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'84 300SD sold
124.128

The Army does it.Besides your waste motor oil is burned in Tugboats on our nations rivers.
So talk about polution right in the middle of country.
I too was afraid of the carbon in oils,that may act as a laping compound.However practicules are to small,and I don't burn used diesel oil.I also only do this if totaly broke.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

I sold a Deuce and a half to a fella that is running 100% UMO. He runs it through a centrifuge to get out the junk. He tells me that black oil will get clear enough that it looks like 15w40 new. He does go through more filters. The Deuce has one primary and two secondary filters a lift pump in the tank as well as on the IP. The IP is a single plunger rotary type, and the engine is DI. It smokes a little more at idle but is clear as the sky at full load,RPM. I would be reluctant to use any large amount in an auto. On the other hand the brother of a guy I work with runs a Jetta and a Power Stroke on it. He warned of acids in the oil that need to be removed by running it through some sort of Polymer? It is only available from the Gov. and needs a special license.

What about detergents and other additives they put in oil? How will those things affect the burning, deposits, and abbrasivness.

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