Well here's an update on another rig.
61,000 miles. Mobil 1 10w-30 High Mileage for about 50,000 of those miles. The initial 10,000 of those were with dino oil. This wear may have occured early on and then been kept from failing by the use of the Mobil1, or it may have been gradual. I'll never know.
Anyway, following the very helpful instructions provided on this great thread, I pull mine tonight and it was, shall we say, 'well worn'.
The gears are nearing a razor edge and it needs replaced asap. I'll be making an appointment tomorrow as I'm still under the 7/70 warranty.
Rev. B unit. OPDA Shaft has no resistance at all. Spins freely. Never had any issues. OPDA has no abnormal vibrations when feeling it with engine running.
Luckily The cam gears didn't appear to show nearly the wear of the OPDA gears, but I was only able to inspect a couple teeth that were visible. They looked very minimally worn.
I'm still skeptical about the lifespan of a new OPDA as even if it spins freely like mine has, it still may wear down just as easily as this one did unless they make some improvement to the gear itself. Why all the wear even with no visible drag on the shaft?? After reading these threads, I was under the assumption that the shaft resistance was the cause of the gear wear, but now I'm not so sure. Especially after seeing the difference in wear between the OPDA and the cam itself. Perhaps the OBDA gear was inferior metal.
In any case, I caught it before it blew apart in the motor, and for that I am truly thankful.
Funny thing is I haven't been on this forum in quite a few months and had no idea this was even an issue until I popped in a few weeks ago.
Without this forum, I would never had the heads up to check on this. Thanks much fellow Jeepers!!!
I'l post back after I speak with the local service dept.