Hey everyone. This is my first post here but i've been using ClubLexus before I do anything to my car. I haven't been able to find stuff on the differential. I went to the dealer for an oil change (pretty cheap at my dealer, wouldn't save much more if I did it myself) and they marked some repairs I need.
1.) Left front CV Boot. Pretty sure thats just the drive side cv axle
2.) Both rear differential seals. Self explanatory just the seals
3.) Breather for Differential. This is the one I need help with. Do i buy a breather kit or is it a part. (kit is $70 part is $10)
4.) engine is leaking oil possibly from the front cover. Any ideas of what it can be?

Let me know if anyone can help. Thanks!!