e-maxx diff oil

[highflier]

Hi all,
Many of you may have seen my other thread on me diff rebuild. Now I have another question.

I bought Ofna 5k oil and filled both front and rear diff's with it. I really hate taking this truck apart and putting it back together. In the past I ran the stock diffs never even opened them up. So during this Hybred bulk upgrade I want to get it good and not mess with it again.

Is 5K front and rear bad?
What is recommended as a safe/good configuration.

If I have to change one of them, Is it critical it get very clean first or can I just get out most of the oil and mix the new in?



Highflier