Frankly, you've got a lot of nerve telling people what they didn't see. I have a close friend who followed Toyota's 10K recommendations and at 132K is was using a lot of oil. When it was broken down the rings were locked, piston sleeves were scuffed, and there was a lot of varnish and deposits...
I have two "Battery Tenders". The old original, metal body unit that survived about 25 years. Approx. 7 yrs ago, I bought a second one from Amazon ($30) with the water proof body. Both are still working and not caused any issues.
Let me attempt to make some sense of these posts. I have owned (with 98% certainty) way more vehicles than a multiple of you folks all together. I've raced, owned a sizable business that required vehicles, and collected over the years. I used to sell Amsoil, and of course used what I sold. Used...
The recommended oil in '14 was 0w-20, but the turbo model took 5w-30. I don't see an issue with running 5w-30. I've seen a lot of engine tear downs in recent year engines. If you are indeed consuming oil vs. leaking it I would suggest the cause could be a common one as of late; the oil control...
I hope you're going to do an oil analysis. Filter media particles? I would have a close peek at the coolant tank as I've seen some odd looking particles in coolant from a small compression leak in the head gasket. Old oil on the shelf too long gets deposits in the bottom of the container?