Is this stuff any good for a Ford differential that calls for 75W-140 Synthetic? It is about half the price of Motorcraft or Mobil-1. I change the diff oil every 50,000 miles and don't really see the need to spend the extra money if I don't have to.
PAO based. I'm using it my Harley transmission. It's working good so far.
2012 Chrysler 300, 3.6, ZF 8-speed: QSUD 5w30
2008 Ford Taurus X: MaxLife 5w20; MaxLife ATF