NOTE:Unwashed bio-diesel contains soap. If you agitate your first few washes aggressively, you will more than likely create an emulsion from the the water, soap, and bio-diesel, so the trick is to be VERY GENTLE with the first washes. Wash One:

* Pour 1 liter bio-diesel into a 2 liter bottle.
* Gently pour about 500ml water into bottle.
* GENTLY rotate bottle end for end for about 30 seconds.
* Place bottle on flat surface.
* If you have been GENTLE the water and Bio-diesel will separate immediately.
* You will notice the water is not clear.
* Remove top and using your thumb as a stopper, turn bottle upside-down and drain the water using your thumb as a valve.
* You have finished wash one.

Wash Two:

* Pour in another 500ml water and repeat wash one, except rotate GENTLY for about 1 minute.
* Drain as in wash one.
* You have finished wash 2.

Wash Three:

* Again pour in another 500ml water and GENTLY GENTLY GENTLY shake bottle for a minute or so.
* When water and bio-diesel separate discard water in same fashion as before.

Wash Four:

* Another 500ml water and a bit more agitation for about 1 min.
* After separation of water and bio-diesel Drain as above.

Wash Five:

* You should now be able shake fairly vigorously.

Testing For Completion

Washing is finished when after shaking and settling, the settled water is nearly clear. Be aware that in your later washes you should be able to shake violently. The water and oil will take longer to separate because the water forms tiny bubbles in the bio-diesel that take time to settle out.

Washed bio-diesel is VERY CLOUDY, much lighter in colour than the original bio-diesel and looks terrible. After a day or 2 settling and drying it will clear.