Oh no...
I showed this up for some information, of about the kind that "It seems, that the whole mess with veg oils is caused by about less than 5 pct of it´s content, which you may easily remove by some heating and cooling, right as if you´re making linseed oil varnish, then filtering after some sit-off time". To provide some reference for newbys about "what makes your oil pump worm to strip wen the saw sat awhile between runs" or "what´s the mess which made your saw giving no oil" (I bet you will not loose good deals on clogged up saws, some kind of people just don´t get it, anytime, anyhow, period).
I realy wasn´t about somehow militant "green" debates, even if I also recykle crap on cottage...
But I can´t help myself not to add something to aditives:
What makes a veg oil into bar oil are mentioned aditives. Also, just right these aditives makes the only residues and not-so-easily degradeable part of veg oil based bar oil one can buy.
Sad is, that these aditives are from most part the same for motor oil, gear oil, hydraulic oil as well as any "ennviromental friendly, biodegradeable" bar oils or hydraulic fluid for forestry machines. Just the worst and most messy substances are withdrawn from list of aditives for "greeen products". So no matter how "green" product you´re using, still the most messy and dangerous substance of any off-shelf motor oil are poured off the saw. BUT, it was said it´s legal and green, don´t ask why.
So using a veg oil with some add of high SAE grade motor or hydraulic oil is/may be in the end more enviromental friendly than most off-shelf bar oils.
High pressure, high viscosity hydraulic oils (oils, not fluids) are particulary well useable.
I DO NOT want anyone to read this as any "must do" or mantra, or discuss it like this