Forum Discussion
stufarmer
Jan 03, 2016Explorer
It was my experience when I worked in our dealership service departments, (family owned) the main reason for sealed service points was because the typical owner or drive threw lube shops over greased them, blowing the rubber seal. That caused sooner internal contamination that resulted in premature wear. Other than that, it was heavier than normal weights, or larger of-set wheels & tires. That has been a few yrs ago, but at the time, 30k replacement was very rare.
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