i have a film kinda on my washed bio. im guessing its soap from a not properly washed bio.

I did a shake test. 50% water 50% bio and it was pretty white. the 3/27 test passed beautifully but for some reason the wash got messed up.

Wash - 2% magnesol (did not demeth)

any tips?

 

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I almost always get a film on top of washed bio, especially after bubble washing. I talked with Graydon Blair at Utah Biodiesel about it and he confirms that this is normal and not anything to be concerned about. Hasn't caused me any problems so far (I've run about 100 gallons of my own B100 in my 6.9 IDI and Mercedes 240D).