I've run my landy on bio also and it loves it. Having said that, I was paying for it, rather than making it myself. I am set up enough to be able to make bio now, apart from chemicals but the opportunity came around to be able to relieve Ged of his oil on a regular basis, and he's helped me get into filtering it. I will progress onto bio for the winter I think, but liter for liter it will cost me more than wvo does filtered so makes sense to run it that way while I can. Especially now the landy is set up for it.
well.
It will be again when I transfer all the stuff onto it's replacement landy over then next couple of weeks! I'm pretty rough on them ;-)