You are forgetting the Molybdenum Disulphide, shortened as "MoS2" which is an Extremly Good Oil Additive, with Proven Positive Effects.
The MoS2 is totally the opposite to Teflon, because instead of adding a Film "Layer" of sticking gunk, it does really work as Liquid Ball Bearings, also seems like "MoS2" is the Future of electronics, as you can read ~► Here.
I've poured it in my Subaru "BumbleBeast" Weberized EA82 engine, and in my Wife's "KiaStein" T8D DOHC Engine. I've used for Many Years, Special Gearbox & Differential oils formulated with "MoS2" in 80W~90 from Motul, as you can see:
I've used Motul Gearbox / diff oil with MoS2 (Molybdenum Disulphide) Since many years ago, Always with Great Results; believe me: it REALLY Smoothes any Manual Gearbox I've poured it in (and I've used it in many, many cars, from friends' to my family cars, and someone else's cars I've serviced), so beside the extended life for a Gearbox / diff, it also makes it Smoother, I mean Softer shiftings and reduced noise & heat.
The Molybdenum Disulphide is Widely used in High Quality Constant Velocity Joints' Grease:
The Correct Mix of Oil or Grease with MoS2, was patented by the German Lab "Liqui-Moly" as you can read: ~► Here, and its formula is used in Liqui-Moly / Lubro Moly Motul Products, widely known here, with great Reputation.
Edited by Loyale 2.7 Turbo, 21 February 2014 - 12:35 AM.