Dude...just buy the ZF oil. Quit trying to save pennies that could cost you $$$$.

Your location says you are on the west coast. You could have had the fluid by now and saved gallons of gas running back and forth to the cheapy parts stores...

__________________
Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual