I deal with oil specs all the time with the Industrial and Municipal Water and Waste Water Equipment my Employer sells.
If you want a good laugh, one company specs the same oil used for reciprocating piston steam engines for use in their gear boxes.
Then if you want a bigger laugh, there are food grade lubricants to use if the equipment is used in a food factory
That way the hot dog you get may have EP2 food grade grease in it that won't make you ill or kill you
ATF+4 is what Chrysler has chosen to use for now, I plan to stick with it
