Originally Posted By: weasley
Originally Posted By: CrawfishTails
Interesting. What is being done to add polarity for better tribofilms if esters are out of style?
There are numerous polar and non-polar molecules in motor oil; some from the base oil(s), some from the additives. You imply that add polarity = better tribofilms; this isn't necessarily a given
(for example, increased polarity can lead to reduce surface wetability/spreadability).
Originally Posted By: CrawfishTails
And what does Castrol Magnatec do? Castrol claims lots of polarity for that line.
You think that an oil company will give away a formulation or ingredient on a public forum? Where do Castrol "
claim lots of polarity"? They claim clinging molecules (
here's the official line).
It is a molecular effect, not a macro oil film effect. Of course being a motor oil it will
also do all of the usual oil stuff, like form a hydrodynamic oil film, clean, protect, cool etc as evidenced by the various specifications and approvals.
Of course these oil makers balance metal polarity in their chemicals. Thats a given.
Molecular effect, not macro oil ...? Really. You just said that. Wow.