I don't know... would you go on some internet forums and talk about your 48k generator grow? I wouldn't... at least some people I know (who do run a 48k genny setup) don't go on the internet and talk about it.
Point well taken, it would make things alot easier not having to deal with answering the question of why are you using more power than the entire street and the whole neighbor hood around you, and it doesent seem that out of reach to me, and i have to believe you wouldnt need a mill or 2 get one going, just my opinion....
They have generators now you can use veggie oil from the store. And Motor oil when you change your oil. Cheapest way is to get it from a resturant. They have a drain inside or out back. put your barrel out back and have them pour it in there and pick your drum up. the one i saw runs 2 gals of veg oil for 24 hours. not bad at all for 6kw