txab

Youtube is a good source for tutorials on specific projects

If equipped with engine oil cooler they would be located above the oil filter

You're fine. It's adding additional friction modifier, which is unnecessary, that can be a problem

https://www.google.com/search?hl=en&as_q=hood+open+light+chevrolet+2018&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=www.gm-trucks.com&as_occt=any&safe=images&as_filetype=&as_rights= https://www.google.com/search?client=firefox-b-1-d&ei=NSy3XLXiDNH0swXcxIU4&q=hood+open+light+chevrolet+2018&oq=hood+open+light+chevrolet+2018&gs_l=psy-ab.12...41305.43109..45408...0.0..0.118.453.4j1......0....1..gws-wiz.......0i71j0i22i30j33i22i29i30.ACJlavV4DHc

Key on engine off pressure reading should be 55-62 psi

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No worries. Shavings are from cam/lifters that's being fixed. As stated above, the oil filter will catch the debris or it will leave the pan during oil change. Put a magnet on the filter or pan if you're worried. Do a couple of quick oil/filter changes maybe to settle your mind. You should have seen all the shavings in the early oil changes after you bought it, it was hardly pristine, they never are I would have no worries. I've had cams/lifters fail over the years, never thought about trashing a block over it

I would think there is a larger aftermarket radiator out there somewhere.

Rockauto has them. I would think local parts store would carry the as well, especially NAPA. They are just a high flow valve

What parts did your "kit" include? You still may be missing some pieces

Hardware store

I understand, just wanting to keep this pretty on topic to OP's request and not venture off into tribology discussions.

Let's not turn this into another 10 + page thread on oil since there currently is when active.

Generally causes them to chatter. At least that's what's been reported here. Also locking when not necessary. I'm sure some have had no issues that they've noticed.