Well, I finally found kero at the pump. $4.60/gal, which is half what it costs at the farm store, but more expensive than prices posted here. I'll have to look around some more, but if I have to make a long drive, it kinda eats into savings. The good thing about this place is that it's by Costco and a bunch of other stores that I use, so easy to make a combo trip. Plus I know the fuel is fresh here. Pretty cool station - at the pump they sell about every gasoline there is, including 110 octane racing fuel, plus the diesels and the kerosene.
Oh, on the firewood tangent: Charby, you were dead on regarding the burnability of the Russian olive. I had one big ass fallen limb that I bucked up, and I took RKL's advice on a moisture meter, which showed the wood at 10%, so I gave it a go this morning. It burns just fine, puts out a decent heat, and no smell to speak of. I think it still works best as a mix wood, but it will sure cut down on paying for a bunch of other hardwood.
I've already identified around ten other big limbs (really, trees in themselves) that have been down for who knows how long, so I'm gonna turn them into firewood as long as they're still in good condition. Should work out well since I kinda under-bought this year. I should have twice the wood that I have stored. Burning these limbs will help. Plus now instead of removing all these trees, I'll put up with the thorns and maybe just alternate knocking them down to stump level and letting them regrow. As fast as they grow, I should have firewood for the rest of my life here.