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[hheynow]

Here's what Blackstone said about my last UOA.

Potassium and sodium were both present, though we think these are leftover from the WVO use rather than anti-freeze. We understand that you need to use potassium hydroxide and/or sodium hydroxide to make WVO fuel, so it's common to see both elements show up at low levels. Of course, they do mask minor anti-freeze contamination you may have, though we don't really have any reason to think that's an issue here. Wear still looks fine, showing no mechanical problems developing. We're glad to see lead stay so low. Soot levels were low as well.

Sodium was at 8ppm and potassium at 13 ppm.
Since when is NaOH or KOH used to make WVO?
Blackstone needs some remedial lessons on WVO fuel.
My bioD is ASTM commercially made.