Are there some alternate materials that can be used for a contact solution to check the wear pattern on a ring and pinion set? None of the parts stores in my area carry it.

 

If you are just setting up a ring/pinion, white lithium grease, or some of the synthetics, are off color enough to show contact areas and depth. Just apply with a flux brush as evenly as possible. It will redistribute itself as you rotate the pinion.

Dave