I was very interested in the straightforward advice when luckily I read this recipe submitted in 2007 -by member antifuel 1 !! because I have just made my first batch of fuel out of wvo which titrated at
7. I used KOH as catalist and put in 1.5 Kilo with 21% methanol and processed the 100 litres of oil at 57c for an hour & quarter. I did the methanol test which left very little deposit but there was a tiny bit of deposit which I think is maybe soap??? I di a water test (50% fuel +50% water) and was disapointed to see an intermediate layer about a third the thickness of the top fuel layer. Today however this intermediate layer has diminished by about 50% & there is more fuel now in the jar. I hope I can follow antifuels advice & recipe with the sulphuric acid in the hope that it will reduce the soap content in my fuel. I may be able to get rid of the soap by careful washing I hopoe but I am letting the fuel settle till tomorrow before trying to wash it- (I processed it tuesday evening) I would like to ask though did antifuel 1 use 32 oz of KOH in his 40 Gall batch or was it NaOH. I chose to use KOH because although it may cost a bit more the plusses in regard to very very easy dissolving in the Methanol and the fluid state of the by-product seem to be a good choice for me. Please will you advise the percentage of KOH in my oil titrated at 7 ---- or perhapse a formulae or even a table stating the percentage of KOH required for this 'acid' process. I must say thanks a million to all for this very educational site. P.S. May I ask -- Where abouts is 'Eve' in the states ??

presurejet: I used NaOH. I do not water wash my fuel, I heat it and air bubble it at the same time { 180-220 deg F.} depending on the humidity at the time. hotter when humidity is high cooler when humidity is low.

Antifuel,
Can you contact me to better inform me of your bubble washing theory. I am very interested. 330-285-1573 or baileymichael@adelphia.net

Cheers.