Im not to sure about the diffs....you could use it on the ring gear and pinion gear, and fill the inside of the diffs with the diff fluid of your choice....I havn't yet messed with the diffs in mine..... I'm leaving them alone for the time being....till they need replaced or need something to do in the winter...
I'm with you. Great stuff. I bought 1 tube and loved it, then bought a few more. A couple in the pit box and a couple for the bench. I use it to lube anything that needs lube and is sealed from dirt.
A+ stuff IMO.
I can't decide if its more fun
to make it...
or break it...