best cutting oil for stainless steel

[redridertwo]

what do you guys run for cutting oil for threading stainless steel
my dad love the castrol mollydee but its 100 dollars a gallon and it stains everything but it does work good
we thread a lot of 3 in 304 ss acme 4 tpi shafts 30in of thread if we run just coolant inserts last maybe two parts so we run cutting oil and the inserts last maybe five parts
any help would be great thanks

[underthetire]

Hangstefers missile lube. Spelling might be off, but stuff is pretty good. It's an oil as well.

[djr76]

I use, Castrol Safety Draw 722X which is discontinued and replaced by Gloc Safety Draw 261 AZM. Other then that, sulfurized cutting oil works great, Ive even mixed it with the safety draw.