I am not sure is manual mistake or the label of oild box mistake. The importance is the silver oil should be used on differential plate and the white oil should be use on differential on differential ball
If you just follow the user manual, may be your differential become too hard. your can check it.
I also finished la, but no time to put on motor and electronics, maybe will do it in the coming national holoiday. But a few itmes is not good :
1/. plastic too soft
2/. spur gear gaurd ring NG
3/. instruction book a few mistake
4/. changing battery is very difficult, this is crazy, first you must bring tools to replace battery otherwise the screw is not easy to take out, second the plastic parts is soft, you will 100% damage it after 10-20 times battery replacement !!