[Jaxonalden]

Harry,

What kind of bearing did you go back with? With the number of bearings you've done, mileage, maintenance and the way you say they've been treated, are you tracking any type of trend analysis?

What I'm wondering; is the seal the culprit? Seals that are intact and holding in the grease are fine (according to this thread), but once the seal starts to go and hot engine oil begins to penetrate and wash out the grease that the bearings life is dealt a death sentence. You might want to ask your customers what type and brand of engine oil they used? Could certain brands be deteriorating the bearing seal? I would expect the seal is made of neoprene or some other type of oil resistant material, but you never know.

With that said, in your opinion, are OEM bearings fine as a replacement part as long as the seal is inspected?