OK, I'm confused. Many have said to use Permatex anaerobic sealer, others say Permatex Ultra Grey. Almost all say DO NOT use RTV. I have looked on the Permatex site and they show the Ultra Grey Gasket Maker 82194 as SPECIAL RTV, and Permatex anaerobic Gasket Maker 51813. The Ultra Grey does not specify anaerobic, and the Anaerobic does. Loc-Tite has Anaerobic #518. What do I really want to use, and does anyone have an actual item number for such.
Thanks