||04-16-2013 06:35 PM
From what I have read on the web it sounds like an acceptable lube for differentials. The advertisements say it is intended for manual transmissions, also. However, it is a GL-5 lube. From previous research, I decided against using GL-5 gear oil in my manual transmissions. The sources I saw (sorry--no links. I did this research a year or so ago) said that the additives that make the GL-5 work well in differentials contain chemicals that are corrosive to copper and brass. The syncros in manual transmissions are brass.
YMMV. I have seen other brands of GL-5 gear lube with manual transmissions mentioned in the application notes, but I choose to not take any chances. I found a synthetic GL-4 lube that has worked well for me.