Whoooo!! Look at Miriam go with the marked up pics!
Sorry Jane, I should have mentioned what a fiber gear is. You know now though.
I have a lot of trouble getting triflow grease here for some reason. I can find the oil - after a bit of searching initially - but for some reason no one carries the oil. For gears only - I use the Super Lube product which is very similar to Tri-Flow grease - it's got PTFE (Teflon) and it's synthetic and food safe. Technically the Vaseline will work but I think the TF and SL greases "Stick" better instead of flinging off like Vaseline does. Of course, you being in the US, you have access to all that Jenny sells, so not to worry. In the meantime though, you know of other substitutes.