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Anyone burning used engine oil

SV,
I don't burn used engine oil.
I do reuse 75-90 limited slip gear lube in chainsaw bar.
I let it sit in plastic gallon bottle and gravity settles the dirty particles to the bottom of the bottle. Then I remove the clean stuff off the top of the bottle..

You may want to make a settling tank and take the good stuff off the top ..

Let us know how used engine oil works for you..

We had two centrifuges on the dairy back in the 50's.
One centrifuge was a cream separator.
Another centrifuge was a milk clarifier.

I had a honda 305 as a kid. IF my memory is correct, it didn't have an oil filter, it had a centrifuge to remove particles from the oil..

Does anyone make a centrifuge to clean used oil?
 
we have 2 big DeLaval centrifuges where I work. One was used on a ship to cllarify the lube oil. The stuff we centrifuge is used in boilers. Lots of dairies burnt used oil back in the day, now we mainly use it ourselves and have a few larger shops that burn it.
 
I don't use it as engine fuel but I do hang around on some off grid and prepper forums and also service the type of engines they use. has been lots of discussion and experimenting with it and reports are varied. Reports of carbon issues and increased ring and cylinder wear are common. Calculating the cost of rebuilds on the single cylinder diesels they use they are ahead to burn it with $5 diesel fuel. I can say that I burn about 750 gallons of waste engine oil per year in my shop furnace and from that I generate about half a wheelbarrow full of fine and abrasive ash. There is much reading on the subject at the link provided.
Lister Engine Forum
 
Seems like a lot of risk for little return. How much would repairs run to save a few bucks on fuel? Oils today aren't like oils from years ago. Even regular oils can have synthetic components. Some of these synthetic components do not burn clean. Burning synthetic oils in some waste oil furnaces voids the warranty. If it doesn't burn well through an atomization burner, how well will it burn being metered through an injection pump and injector? And what can it tear up on the way through?
 


pretty much everyone who produces a lot of drain oil burns it in their waste oil heater. I don't recall where but six months ago someone posted results of a study where it showed that there was no problem blending in a fair amount, like 20% waste oil. You need to carry extra filters and tools with you though, and the cost of filters cuts into the savings.
 
Massey Ferguson used a centrifugal filter in 2004. It was used on the trans/hyd oil. I think other paper filters were used in conjunction with the centrifuge.

A model I own came with the outer housing in place, but no centrifuge inside. Was told it was a design change is why mine has no guts inside it.
 
People are dumping anything and everything into their diesel to "replace lost lubricity' up to and including new engine oil. Sounds like a way to repurpose a waste product that you would be giving away at best or paying to dispose of at worst.

You probably don't use any of that new-fangled "synthetic junk" anyway, and everything you own is older than God, so I can't see how it would hurt.
 
A number of people locally are using settled/filtered french fry oil as diesel fuel, mixing it in with regular diesel, most places are glad to get rid of it, then the problem is you have to deal with just how MUCH they want gone.....remember this stuff is healthy eating...:)
 
I have a friend that owns a transmission repair shop. I used to get used ATF in 55 gallon barrels from him for free. I would let it settle and tripple filter it, then burn it in my Case 930. Did it for 4 or 5 years before I sold the tractor. It ran really good on it.
 
(quoted from post at 07:06:28 04/06/22) SV,
I
I had a honda 305 as a kid. IF my memory is correct, it didn't have an oil filter, it had a centrifuge to remove particles from the oil..
[b:0cde0a2da2]
Does anyone make a centrifuge to clean used oil?[/b:0cde0a2da2]
Click to expand...

If anyone did and it was affordable, I'd get one.
 
I pay to get rid of waste oil and work it
into my billing. I heat my shop with
natural gas. I wouldn't have a waste oil
burner if you gave it to me. Waste oil
burners are expensive, and a constant
maintenance headache. I've worked several
places that had them, and spent days
working in the cold when they quit. My
natural gas furnace is 20 years old, and
the only repair has been blowing it out
every year before using it.
 
Burning used oil.....

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cvphoto122321.jpg
 
I have known a couple people who mixed used oil with their diesel fuel . I would let the used oil sit for a while and a lot of stuff will settle out, then if you ran it thru a filter and mixed it with fuel which also was run thru filter it would probably be safe for older engines. I wouldnt try it in a newer common rail system and definitely not on anything with emmissions equipment like a dpf , etc. I was planning to do something similar except mix it with fuel oil for my furnace before I got sick. I would also be kind of careful what I use for the used oil.
 
We just use it to start fires. I did notice a jug of used oil that sat for years undisturbed settled out so the oil looked new. Made me curious about blending it into fuel. Given the price this year might be worth looking at again.
 
I have also used the used oil to help burn brush. Sometimes use a little mixed with fuel oil to help get the wood fire going in my furnace.
 
My thoughts....
1 Put it in a barrel and let it sit for a month or so. Carbon would settle out some.
2 Pump off the top and run it through a 10 Micron fuel filter or maybe a 9 micron (Baldwin BF5810/Donaldson 556916 Filter Base Baldwin FB1302.
Leaving the bottom few inch's or so in the barrel should eliminate most of the sludge.
3 Mix it with Diesel at he ratio of your choice and burn it in your engine.
Heard a story once about a trucking company that put their used oil back into their bulk tank. Highway Tax man learned of it and demanded highway use tax on the oil.
 
A friend of mine runs a body shop here in Iowa. He has a used oil furnace and heats his shop with used oil! He has a settling tank and uses off the top half!
 
(quoted from post at 04:25:33 04/06/22) A number of people locally are using settled/filtered french fry oil as diesel fuel, mixing it in with regular diesel, most places are glad to get rid of it, then the problem is you have to deal with just how MUCH they want gone.....remember this stuff is healthy eating...:)
Click to expand...

phil, that ship has sailed. The used oil is pumped into a tank owned by the company that supplies the oil. They take it and refine it and blend it into new oil. The new oil is delivered by tanker truck and pumped into a separate tank. The tanks are usually in the basement but they may be in a locked room and the driver has the key to a little compartment where the pipe connections are. Not a drop is wasted.
 
That isn't happening here any more.It has value,and they have to turn it in to the recyclers now.If you choose to keep it you just have to pay extra for the new oil.There is a percentage allowed for loss,the pizza shop here says it is very fair.The local grease car people are no longer using it.Not because of the work involved,but because they just can't get it.I used to get quite a lot of it for my waste oil furnace,but not any more.He's getting $50-$60 for what I used to haul away a couple of times a year.
 
I just saw on the news that some guys had just been arrested in Salem N.H.with 500 gallons of cooking oil they had
stolen.They had hit several places to do it.They tried to tell the cops that they had contracts to haul it,but
wearing ski masks to do it kind of gave them away.Plus,the owner of the recycling company that actually owned the oil
said they didn't hire any outside helpers to haul it.The recycler put the value at $1000.
 
Do not try to use it in a road truck,it will not pass a tank check from the dot. That cost and old boss of mine a $10,ooo.00 fine,the same as having red dyed fuel.
 
I save mine and give it to the local welding shop. he has an oil stove. Out back he has four or five 500 gal tanks.
 
(quoted from post at 19:48:03 04/06/22) Do not try to use it in a road truck,it will not pass a tank check from the dot. That cost and old boss of mine a $10,ooo.00 fine,the same as having red dyed fuel.
Click to expand...


504, how could they tell that he had used oil mixed into his fuel?
 
(quoted from post at 00:29:46 04/08/22) They dip the tanks from time to time when you go through the
scale
Click to expand...


SV, I am familiar with dipping tanks, and I know of people who have been caught with dyed fuel on the road. Would anyone really dye their used oil? If not, how does an inspector know?
 
(quoted from post at 00:29:46 04/08/22) They dip the tanks from time to time when you go through the
scale
Click to expand...


I could be wrong, but it looks like 504 was telling a story.
 
SVcummins ,Done it for years in road tractors,during oil changes.
Pumped right out of oil pan into a Cummins Flow Blender with 2 filters in it mixed with fuel out of the tank and oil mixed with fuel back into the tank.Around 10 gallons of used oil mixed at each oil change.
 
(quoted from post at 01:44:50 04/06/22) Ive got a spare fuel tank Im thinking of filtering used oil Again for tractor fuel .
Click to expand...

Depends if it is low ash oil . Most oil additives either do not burn at all . Or they become gum, goo or abrasive ash .
 
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