I like RoverMasterTech's idea of replacing crank and rod bearings while the oil pan is down to (1) improve oil pressure and (2) increase longevity in a serviceable engine. This post is not asking members to opine on the merits of installing new bearings in an engine with 133K miles.

So, here is my #3 crank bearing. There is visible wear, but is there enough to warrant replacement of all the bearings? If you look at RoverMasterTech's "Main/Crank Bearing Replacement DII" sticky the babbitt on those bearings is wiped. Mine look much better.

Should I replace them?

 

If U can feel indentation with your fingernail , then yes. How does crank look & feel? same test. (p.s. I would it's already out, and deep lines shown in picture)

 

I'd replace. It has gouging running through the center of it. You can see it on the left hand side of the lower pic.

 

that bearing is on its way out but your new ones will look the same in short order, all those groves in the bearing more than likely have matching ones on the crank. Jmho

 

Thanks for the replies. Crank seems in better shape than the bearings. Yes, my fingernail catches in the groove so I will replace them along with rod bearings while everything is apart. Maybe I can get another 125K out of this lump, especially with Rotella T6 and proper change intervals.