Filtering waste oil?

[Johnstra]

How do I filter waste oil? I have a supplier and now I need to figure out how to make the dirty oil useable.

Thanks,

-john

 

[BPINE]

Are you going to use it as WVO or are you going to make Bio out of it?

 

[CumminSense]

I suspect Johnstra (not to put words in his mouth -- apologies if I mis-interpret) intends to use waste motor oil to supplement regular fuel. I have the same filtering question -- hopefully a setup that is simple, effective, easy to get, and not too expensive.



Many thanks.

 

[B.G. Smith]

Well here's one way, expensive I would guess but it does a good job. I used to maintain one where I worked. bg http://www.hilliardcorp.com/hcrecl.php3.

 

[Matt400]

What about using it in a separate system like this:



A single injector on the intake possibly driven by an on board compressor to overcome boost pressures and inject filtered waste oil from a bed mounted tank to greatly "enhance" mpg vs running it in the trucks fuel system?



Going that route keeps the waste isolated from the fuel system. It would clog a CAT for sure and anyone selling such a kit would go to jail so its just thinking out loud.



Maybe pressurize the tank with 2-3 psi air for flow and then up that to a much higher pressure at the nozzle for atomization... crazy or 30mpg or what??

 

[Gary - K7GLD]

If all you want to do is filter used oil for impurities, any of several bypass filter setups will work fine in getting impurities down into the sub micron range, as well as removing varying degrees of moisture. Frantz and Amsoil market excellent units - the Frantz uses relatively cheap toilet paper as the filtering cartridge - here's a pic of mine:



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[LEggers]

Kinda what Gary says. I used a filter adaptor off a old forklift with a 5 micron filter. Attached it to a small pump and ran the oil from one drum to another.

 

[Johnstra]

I'm talking about filtering WVO to make BIO. Seems like a filter like Gary or LEggers describes should work for WVO. Will it?

-john

 

[LEggers]

Sorry I just put my foot in mouth. .

 

[Gary - K7GLD]

I'm talking about filtering WVO to make BIO. Seems like a filter like Gary or LEggers describes should work for WVO. Will it?

-john

I can't think of any reason why it wouldn't...

 

[Headshot zod]

I use multiple filters over a 5 gallon bucket. The key to saving money on filters is using the different micron sizes. One inside the next.



I leave my veg oil containers outside in the sun to warm it up. YOU NEED TO WARM IT UP. Don't think that the stuff will flow through a 5micron filter when its 70 degrees. I just ordered a $28 wand type bucket heater so I can warm my bucket o' oil up when it gets cold out. 100 degrees is a great temperature. Too hot and you will stretch the filter and it will be useless.

 

[Gary - K7GLD]

I use multiple filters over a 5 gallon bucket. The key to saving money on filters is using the different micron sizes. One inside the next.



I leave my veg oil containers outside in the sun to warm it up. YOU NEED TO WARM IT UP. Don't think that the stuff will flow through a 5micron filter when its 70 degrees. I just ordered a $28 wand type bucket heater so I can warm my bucket o' oil up when it gets cold out. 100 degrees is a great temperature. Too hot and you will stretch the filter and it will be useless.

Yeah - elevate the supply tank as high as possible, paint it black for best natural sunlight heating, then gravity feed to/thru a submicron filter - sounds like a plan to me!