[Flathead Fever]

I was a fleet mechanic for 30-years and packed more wheel bearings then I want to think about. 300 to 400 trucks and every 30K miles they got packed. We bought 15-gallon barrels of Chevron wheel bearing grease. The important thing is to not mix up the types of grease. If you're unsure what was used the last time, you need clean the bearings and inside of the drum with brake clean, so the new brake grease is not contaminated with the old stuff.