Don't use teflon tape on the plugs, those are pipe threads and under very low pressure so they don't need it, that's why there's none from the factory. If you decide to use thread tape make sure you adjust your torque specs for the lower friction, this guy didn't do that. Torque specs are set for clean thread applications.
Good vid on the procedure but I have a question on the Teflon tape. Looks like you used the white stuff which is typically used for water fittings. I always use the yellow Teflon tape which is rated for oil and gas fittings. Would the yellow stuff not be a better choice?
There's a lot of opinions on using tape. I've seen a lot of people use it. I've heard a lot of people say that it's worse and changes the torque spec. I've never had an issue with it. I imagine that the yellow stuff would work just as well
All of you disregard the white Teflon tape. It's not meant for oils and you'll likely have issues later. White thread tape will degrade with that high heat and oil. Instead use yellow thread tape for gas and chemicals. You'll thank me later.
I just change the differential fluids(2013 wrangler JK and saw the same red bead of sealant around the rear diff cover edges. [ Is the":excess" sealant normal? I have no leaks.