I have oil leaking from my rear driveshaft where it goes into the transmission. I have read other posts on how to do this,so I am ready to give it a try. I ordered a new seal for it and am waiting on it to arrive. My questions are: 1) What thread sealer on the transmission nut to use - Blue (medium) or Red (High Strength). 2) what is the torque for that nut when I put it back on. 3) I see that some guys are using Permatex on the tip of the shaft.Can I use RTV red hi temp? 4) what type of grease do I fill the boots with?

I would appreciate any help with these questions before I proceed with the project.