I misread tour post. I thought you needed molybdenum grease, but no, mobile28 is aviation grease. I dunno where you’d find that brick and mortar, but aircraft spruce carries it if you wanna buy online.

https://www.aircraftspruce.com/catalog/eppages/mobilGrease28.php?clickkey=613631

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Use brake cleaner t9 get the grease out, and an autoparts store should have moly28, if not check tractor supply/a farm store.