I attempted to replace the fluid in my Mitsubishi Outlanders transfer case tonight with AMSOIL Severe Gear® Synthetic Extreme Pressure (EP) Gear Lube 75W-90 (SVG).
Ran into a bit of a problem once I realized the drain bolt was a hex head and I don’t have the correct socket. The 3/8″ hex from my old Chevy Cavaliers brake calipers fit but was a little loose. Just looked up SAE to metric conversions and 3/8″ is 9.525mm so it looks like a 10mm hex head for the drain bolt.
I didn’t want to strip out the hex plug with the wrong sized socket so I packed it in for tonight. Tomorrow I’ll call the dealership get the fastener sizes. I was able to get a 17mm socket over the standard bolt head of the fill plug.