I don't know why I'm even wasting my time posting this. It's late and there are already an unreadable 300+ posts.

A lot of boondocks people like me will switch to wood gas/biogas. It is a cheap and proven technology. With appropriate pretreatment of the "gas", the engine will last a long time and not varnish out.

This was discussed on TOD, what, 3 years ago?

Todd

Hi Todd--Seems to me we discussed constructing the fermenter, collector and processor all that while back--a different kind of still. I'm glad you decided to post because it spurs the little grey cells, yes!