PDSC is an oxidation metric. Higher is better. Brookfield is viscosity, lower is better. 4-ball wear test is low-load equivalent, similar to highway driving; 4-ball weld test is a high-load test similar to shock loading or drag racing.
TL;DR- all of these gear oils are VERY good; some are a little better at certain things, but if you bought one there’s not much lost by waiting to drain for another choice.
TL;DR- all of these gear oils are VERY good; some are a little better at certain things, but if you bought one there’s not much lost by waiting to drain for another choice.
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