I will like to know, How can I filter black diesel to extract the used oil and get back to regular diesel.

I have a lot of black diesel that consist of 90% Good clean diesel and 10% used Motor Oil.

I wonder how can I filtrate the diesel to get it back to regular diesel specification or as close as possible.
Thank’s

 

First off realize what your asking is super controversial and people are gonna get butt hurt and tell you not to do it. Secondly,you need to ask yourself what is it worth? All that you read should be considered experimental and not fact or guaranteed. As long as your ok with the above continue. Again,the price of failure can be high.

My personal experience is with my family work truck,and 85' Chevy C30 Crew Cab. The truck has a 6.2L Diesel(NON TURBO) with a TH400 and 4.10 gearing with 285/75R16 or 32.8 inches. The truck has 48k and counting on it.

Oil Source:
I use known source of waste oil with no coolant or water. I use my own personal motor oil from oil changes in the lawn mowers,motorcycles,truck and car. I also have a friend that has provided me with good waste oil,some is mixed with brake cleaner and atf,but again no water and no coolant.

Filtering:
I bought four filters from duda diesel off ebay( http://www.ebay.com/itm/Sewn-Industrial-Filter-Sock-Bags-Water-Liquid-Biodiesel-WVO-Oil-Dust-Fuel-Diesel-/231354514757?var=&hash=item35ddcdbd45 ) Read the options and choose your poison. I believe mine are polyester. I purchased (2) 5 mic and (2) 2 mic bags. My setup is 1 5 mic bag nested in side of the 2 mic bag, that way the oil filters 5 mics then 2 mics. I filter the waste oil in to a home depot 5 gallon bucket after it has gravity fed at whatever temperature it is outside(i don't heat or anything) . I pour the filtered oil into a container and pour it into the vehicle when ready. I do not filter twice or use any other method. Sure a centerfuge would be better / safer,but pricing one I realized it wasn't worth it to me. There are better methods,this one is just mine.
Using WMO:
I researched for about year reading everything I could find,it sucks! There is a ton of misinformation out there and rabbit trails.Of all that I read the most important conclusion I came up with was to keep the percentage at 20% oil to Diesel. Everywhere I read of guys going above that problems presented themselves in major ways. I think this is the single common denominator in failure. In the 6.2L case I believe the Injection pump to be the weak link. Too thick and you snap a shaft in the pump. I filter and use (3) 5 qt jugs and that puts me right about 20% of a 16 gallon tank. I used this method for almost every tank for 3k.

I hope this helps you on your quest.

 

This may be more on what your looking for https://www.dieselbombers.com/altern...esel-fuel.html