WMO as a Fuel (Waste Motor Oil)

charles todd · Mar 17, 2009

I have heard some members here talk of blending WMO with diesel... Is this a good idea? I ran some through a 70 mesh paint filter and a funnel with a screen. It seemed clean of most larger particles but was still BLACK. This told me that there was still contaminates in it. I did mix 1qt in 5 gallons of diesel for grins...

If one built a device with a pressurized tank and forced the oil through a spin-on filter at lets say 10 psi, would the "clean oil" be suitalble to burn in a diesel engine at lets say 20% mix? Would it be ok to re-use in an engine? Maybe use one filter to clean the particles out and one to remove water?

I know that suposedly one can reclaim synthetic forever if it can be cleaned. I use synthetic in everything but the tractor and riding mower. I hate to use the WMO, waste hydraulic oil, and waste transmission oil only for burning brush and stumps... It must have some value. Before anyone says a "oil furnace" it rarely gets below 35 here.

Thanks,

Charles

Janicholson · Mar 17, 2009

There are molecule size particles of metal and toxic combustion products in it that are not filtered out. The running of these through the injectors would worry me. I believe in turning it in for recycling by refineries. Though it has heat value, it is not worth the risk to me. JimN

Ron in Nebr · Mar 17, 2009

From what I've read, that used to be very commonly done in the past by trucking fleets, etc. and on an older tractor or whatever I really don't think you'd ever see a problem from doing it. I don't think I'd try it in a modern electrically controlled deisel like a Duramax,etc. though.

Did read an article a few yrs back in Circle Track magazine where a stock car team was collecting used oil, running it through multiple stages of filtration, and then using it in the crankcase of their race motor. Hadn't had a problem doing it for a couple seasons from what they said....apparantly the oil doesn't "wear out", it just gets contaminated.

Janicholson · Mar 18, 2009

With respect, not a flame!! All oils break down. Long chains get shorter, Cross linking happens with heat, and corrosion inhibitors become consumed. The reuse of engine oil in a racing engine (on the cheap) hurts very little because the engines are rebuilt and messed with (at times between heats). Synthetic oil is harder to destroy, but still has a point after which the molecules are no longer good enough to function. The chemical additives for detergent etc also break down. Burning in a stove works, But the residual metal (cadmium, silver, iron, lead, chrome, and others) still polutes. I believe giving it back to the oil companies to re refine, or make into other materials is my policy choice. JimN

504-2 · Mar 20, 2009

Before low sulphur fuel, some truck lines did not even have drain plugs on their trucks,every so often a gal of oil would pump into the fuel tank and another gal would pump in to the crankcase from an on-board tank. If they could run a million miles of used oil through their injectors I don t think you are going to hurt a thing.

charles todd · Mar 21, 2009

This is interesting... Was this an automatic procedure or driver controled? Was it filtered on its way to the diesel tank or just out of the sump?

Charles

WMO as a Fuel (Waste Motor Oil)

charles todd

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Janicholson

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Ron in Nebr

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Janicholson

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504-2

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charles todd

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