Im doing a service on my M9000 HDC 4wd. I intend to drain front differential and hubs. Manual says to refill hub oil to top of fill plug threads. That leaves no room for expansion once temperature gets up in hubs. About half way up there is a plug. That makes more since for a check full plug. Manual makes no mention of that.Differential has a check plug so no problem there. Just curious what you guys think on hub oil refill.
Thanks,
Dave
Thanks,
Dave