Which is more important for a gear oil, weld point or 4 ball wear scar?

[spasm3]

I saw as recent chart of several gear oils, as the title asks, which is more important?

 

[Rand]

I'd say neither in typical usage... such as an automotive differential.

 

[SubieRubyRoo]

I'd say neither in typical usage... such as an automotive differential.

Not exactly. The wear scar is a good comparison to heavy, consistent loading of the gearset like highway miles. The weld point is important for high-impact, high stress applications... think drag racing launches on slicks with a clutch dump. Both are important facets of the gear oil's protection.

@HPL Plant Manager did I approximate that correctly? I don't remember all the details of what you shared on this. Thanks!