I've heard somewhere of auto stores refusing to accept clean looking but used 'hydro' oil ... because to one employee or another it isn't 'engine oil' or something strictly 'auto' related withing their scope of understanding. It can be as simple as to whom you're speaking when asking, so be sure you're talking to the boss and not the new guy.
A while back it was suggested that such be mixed with used trans or motor oil to darken it and muddle the definition/look so they'll take it. Well, these are typically dyno
oils vs various glycols (brake fluid, AF) and I've never been asked 'where'd you get so much' when taking in a few gals of 'custom blend' at a time.
For sure, waste oil heater guys aren't so fussy if finding one of them isn't easy. One told me he burned 50 gal/day in Jan '14 and Jan '15 to heat a 6 bay shop. (uninsulated metal, 16' ceilings
)
btw, I got a neighbor to try standing 'starter' logs in a metal bucket with a few inches of used motor oil poured in. We used a cookie sheet to drain the drips when rotating them (weekly) back to the wood pile and adding to the bucket, and never mentioned it to 'the little woman.' His lady has her traditional way of starting the boxwood stove they augment heat with, ripped/folded cola cartons, etc. One day she called urgently, "The pipe fell off". Not
which pipe or what it fell of
of.
I ran next door to find the living room filled with smoke and a rather ghastly stench. "There's something wrong with our wood!" she blurts. "Tell __ when he gets home and we'll do something about it," I say, not alluding to any likely cause
rolleyes
. We reassembled the stack. After her guy came home and some drama reignited we decided this idea wasn't the best for indoor use. On the upside, he has a lot of water repellent wood for the campfire.
