its cheap at that price now but id suspect youd like it to make more before the end.
i have 1,000 ltrs of castrol hysol soluble oil here, its in a cube, id like shot of it tbh, new its cumin in at, wait for it.......
£6,300+vodka for it iirc.
id be easily talked to if i had the right man, iirc its geared for alu more than anything but its good for all, i think its synthetic.
i dont know whats the best way of getin rid of it, i dont want to be pouring it into 1ltr bottles and sellin it on e bay, i just dont want the hassle tbh.
i see you have the coolant sorted but if ever again your faced with a similar query you could use a mist coolant set up, there are expensive ones to be got but if your not fussy the best end of one can be got on e bay from far east for less than £5,
i got one here to see if it was up to much before id take the plunge for a dear one.
its a good way of keeping the work and tool cool, you do need an air supply but that shouldn't be a problem id assume.
the air siphons the coolant mix from a bottle and as it dose it keeps the cutting area clear of swarf and last but not least it dosent use much coolant so it goes a long way.
I would be interested in a drum of that castrol hysol soluble oil, where are you based?