Wheel bearing oil

[AFChap]

My Stemco hubs were leaking a tiny bit because the red breather plugs had become hard and did not seal well after 10 years. I bought new plugs at Rush Truck Center in ft Worth for $3.xx each.

[harleyjt]

Not that it makes any difference, but all the responses talk about a red plug. Mine are actually black plugs on my 2005 W-24 and they don't feel hard although I haven't removed them. Oil level is good so I'm leaving well enough alone.
jt