Hi All,
Is it possible to have your transfer case oil leak into your auto gearbox?
I only ask as I've just done a filter and ATF flush as well as the transfer oil. When doing the transfer case the oil came out looking pretty dirty and milky, and now I've done the ATF it was really dark, almost black. I tried to completely flush the ATF using the cooler lines but after 12L it is still quite dark (not pink like the fresh stuff).
Truck drives fine, but I'm wondering what would make these oils look so bad?