Give advice on Biodiesel, from used sunflower oil, problems

Sometimes you encounter problems when making biofuel from used veggie oil, I spent many frustrating hours in forums etc. trying to fix problems, and almost gave up. But fortunately it’s not in my nature to give up, so if you need to know how to fix some problems with your process etc. I have probably made every mistake possible and got myself out as well.

“A clever man knows all the ways…A wise man knows the one right way”