I wanted to make a little report on my experiences with with pine wood vs oak.
Up until about six months ago I was using about 99% pine for the gasifier fuel. The main reason is because it is so handy using the scrap from my sawmill which is mostly pine and I already have it on my tractor forks and very easy to feed right into the chunker.
Whenever I dumped my hopper condensate tank from running the pine I would have a large amount of tar to drain off. Also now and then at a cold start up I would notice the throttle feeling a little sticky until the truck warmed up . After driving the truck a couple thousand miles or less I would be able to light up my intake manifold for a burnout cleaning.
For the last six months I have used near 100% oak . In this time frame I haven’t noticed a sticky throttle nor have I been able to light the intake manifold. When dumping my hopper condensate tank I notice very little tar .
The oak fuel cost me more time and effort because it is not a byproduct of my sawmill but I think I will stay with it for the truck fuel.
The furthest I have driven on a hopper of oak wood and also pulling a small trailer with my dakota was 120 miles . On pine wood a hopper would last on the same road about 70-80 miles .
I have seen very little difference in power or performance with the two fuels .