White Lithium Grease - But How?

[LzChase]

I need help. Both many airsofters and non-airsofters say white lithium grease is the best for metal on metal parts, However I don't really understand how to apply it since the bolt carrier has a rubber seal and a plastic nozzle. Even if the grease is not applied directly to said point, I can imagine residue ending up there with use. I want to keep my weapon as healthy as possible, and if WLG is the best, I I should switch to using it. 

Or am I good to go as it is? I currently use Tamiya Cera Grease for heavy wearing parts. 

Other people also mention Superlube and PTFE grease. 

I've previously experimented with grease types on G3 platforms, however this is an AR platform and I lack experience in what is the best grease for it.