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  #1  
Old 06-07-2004, 04:04 PM
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Burn the Old Engine Oil?

I've got a big bucket full of used motor oil my previous roommate left in the shed. Can I dump it in a quart or two at a time (to a full tank of diesel) and burn it through the 220D? Should it be filtered first?

I know I could just take it the the local McParts and have it recycled, but the bucket is darn near overflowing and I have no suitable lid.

Eric

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'81 300D (Awaiting the engine I picked up last week :-) )

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  #2  
Old 06-07-2004, 04:28 PM
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Hmmm...old uncovered bucket of oil in shed--no dust, bugs, or metal shaving in there, I guess. Why risk it?
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  #3  
Old 06-07-2004, 04:57 PM
LarryBible
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I have done this before, but only with oil that I kept sealed up until I poured it through three layers of heavy cloth. I burned one quart per tankful with no trouble.

As RockinWagins comment correctly suggests, don't try this with oil that has been exposed to the elements. Only if it was well sealed and well filtered.

Have a great day,
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  #4  
Old 06-07-2004, 05:18 PM
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Thanks

Thanks guys, I didn't even think about what might be lurking in that oil. I think I'll just deal with it and take it to the recycle bins.

Appreciate your time.

Eric
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  #5  
Old 06-07-2004, 11:29 PM
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Environmental concerns would prohibit me from using engine oil as fuel. That stuff needs to be recycled, not put in the air.

but i guess that's why im a veggy head...
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  #6  
Old 06-08-2004, 07:44 AM
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I would think that the acids that accumulate in the oil and all the additives they put in it might not be suitable for burning with fuel. I would definitely bring it to the recycler.
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  #7  
Old 06-08-2004, 07:58 AM
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Recycling: Not exactly what you'd think it is

Quote:
Originally posted by Jimmy Joe
Environmental concerns would prohibit me from using engine oil as fuel. That stuff needs to be recycled, not put in the air.

but i guess that's why im a veggy head...
"Recycling" used your engine oil generally means that it gets mixed with a lot of other used lubricants of unknown origins and sold to an asphalt plant for fuel where it is going to be burned at low temperature and with far less enviromental control than your OM615, 616 or 617.

IMHO, it is far better to run it (clean and filtered, of course) through your engine.
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  #8  
Old 06-08-2004, 07:59 AM
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All engines burn a little motor oil, what gets past the rings, guides, etc, and what blows up the breather. So it will burn, I just wonder how much crud would be left in your fuel system even after it was filtered. I have seen some pretty cruddy fuel tanks, those images keep me from trying this. I am glad you asked, I have thought the same thoughts.

Mixing in waste veg oil seems to be the way to go. I still wonder about the negative impacts of this also, coking, etc? I have asked one restaurant to save oil for me. They are lukewarm to the idea at best. Most restaurants around here use the big recycle bins with a contracted recycler.
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  #9  
Old 06-08-2004, 10:05 AM
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Ive read that some big truck fleets use 10% recycled motor oil in their diesel fuel to save money and lubricate. Cant remember where I read it though.
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  #10  
Old 06-08-2004, 10:56 AM
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Quote:
Originally posted by jpmaynard
Ive read that some big truck fleets use 10% recycled motor oil in their diesel fuel to save money and lubricate. Cant remember where I read it though.
Tuckers have been doing this since the diesel truck first started running the roads and it's still done.

I have an independent trucker friend who has done this for years with his trucks, but he has always filtered the stuff and used 10% ratio. I know several people doing it with their VW's, and most farmers with Ford or Dodge diesel trucks around here also do their own recycling. Matter of fact most of the farmer's don't even filter it, they just dump it into the fuel tank of the truck and add diesel. One guy I know pumps out old waste tanks and then filters it and runs it in his Ford "Powersmoke". He runs it 50/50 and he has been doing it since he bought the truck new in '93.

My last tank in the 240D had 2 quarts of powersteering fluid in the mix of diesel. Tank before that 6 qts of used motor oil from it's own oil change, never saw any smoke from tail pipe and it purred like a kitten. I will say that the tank with the motor oil also had 3 gal of B100 in the mix.
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  #11  
Old 06-08-2004, 12:20 PM
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I've run up to 10% filtered, used motor oil in mine with only a slight vibration (similar to running veggie).

Don
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  #12  
Old 06-08-2004, 12:50 PM
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Quote:
Originally posted by diesel don
I've run up to 10% filtered, used motor oil in mine with only a slight vibration (similar to running veggie).

Don
There is no difference in the way my car runs with the used engine oil in the tank. I have noticed with 3 gallons of B100 mixed with a full load of #2D it runs smoother and quiter.

Is the reason for the vibration beause of high mileage on you car?

Just took a short 40 mile trip through the country in a friends new '04 Avalon and by his trip computer the average speed for the trip was 53 mph and average fuel mileage was 19.1 and he is so pleased it runs regular gas, unlike his '96 Avalon which required the expensive stuff.

My wife's Jetta on the same trip at that speed would have averaged about 60 mpg.
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  #13  
Old 06-12-2004, 03:41 PM
Knotman
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veggie causing vibration ?

I haven't heard of vibration associated with burning WVO. What would be the mechanism causing this ?
I added some used lube oil (filtered to 0.5 micron in my Greasel-bought bag filter, just like the WVO I'm burning) to my tank, but decided to stop until I resolve the faltering I've been experiencing on near-100% unheated WVO. I think the problem is restricted flow of viscous WVO in the small-diameter fuel line from the tank. Blending with #2 diesel improves this for me. I'm working on the ratio now.
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  #14  
Old 06-13-2004, 02:15 PM
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Burning used engine oil save an average of .50 a quart. possible rebuild of Injector Pump costs ? you decide
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  #15  
Old 06-13-2004, 05:41 PM
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rdanz,

Running engine on regular Diesel fuel, no saving. Possible chance of rebuilding IP about the same. You decide.

P E H


Last edited by P.E.Haiges; 06-14-2004 at 02:19 AM.
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