Oem IMS bearings are very close in design to wheel bearings, they are permanently greased and have seals to prevent grease from going out, dirt from going in and oil from washing the grease out, when seals fail bearing will fail, think of a wheel bearing without the seals, it will fail quickly, It has been discussed a lot if the ones that actually failed it was due to bad oil that affects the seals or extreme pressure/ vaccum in cranckcase or just a bad batch, I would say if you are not replacing it do frequent oil changes, make sure you have a working AOS and drive it often.
|