Yep. A bit over 10 years now, averaging 50-100 gallons per month. Just topped off my PSD this morning. I also run it in my daily driver, a '98 Mercedes E300 Turbodiesel.
I get high quality used canola oil from a restaurant that doesn't run their oil too long. Titration's usually between .5 and .75. I use KOH, process single stage, and water wash.

 

 

Works for me. It uses a bit more. In a 50 gallon batch, I average 1400-1500 grams. It dissolves way quicker than the NaoH, Plus, the glycerol stays fluid. I use that to pre-treat the WVO. It draws out any excess moisture and I am able to recover some of the methanol that way.

 

 

Quality versus NaoH? I have no way of knowing or testing that. I assume it to be the same. What I do know however, is that the quality of my own fuel is very good. I make sure of it through conversion testing, (3/27 at 68F and less), moisture testing via Weigh Heat Weigh at 500ppm and less, (although admittedly I haven't gone through the trouble of doing so the last several years because nothing has changed in my drying process), and finally cloud point, which is not really that critical in my region, but it's pretty simple to put a jar of it in the fridge. Besides, if I get lazy with my drying process, it will show up quickly if there's excess moisture in it.

But as far as the glycerol goes, de-methed KOH glycerol is quickly biodegradable and is actually beneficial to plants. In fact, there's a part of my gravel driveway where I spread some of it to keep dust down, weeds are growing profusely. Is NaoH glycerol that toxic? That, I was unaware of.