Wondering if there is any auger level maintenance to perform like adding grease to the augers or similar?
None that I am aware of.
You can apply a ceramic coating to the auger to help protect it and maintain performance.
I thought the question was about a grease zerk fitting on the auger shaft or the bushings where the auger mounts to the housing.
Something like this: https://www.youtube.com/watch?v=upGm9Rdk2bA
Yes it was more about injecting grease into the augur like the video references.