Mixing oil weights

Rarichard,
I've replaced the manifold studs when all other work was done. I did a valve job while it was apart. This is definitely lifter tap.
Rod
That engine may not be long for this world if it’s lifter noise. It’s usually the number 3 lifter, the needle bearings go out, the roller top starts to wobble and it wipes out the cam, sending metal throughout the system. How do I know? I just replaced the engine in my ‘12 Ram at 120k, and my brother did as well with 107k, both for the above reason. It may last for a good long while, but when it starts to miss and run like it’s losing power upon acceleration, that spells the end of that engine. Cost me $4k for a new reman’d engine, and $3k to have it installed.

And a note to the problem, Chrysler knew about this problem early on, and my engine builder told me that he was forced to send the cams back to Chrysler on every engine he reman’d, as to not let out how bad the problem really is!