Internet must be back up and running at the retirement castle, took you awhile. Rational thought is running what’s in the owner’s manual, unless you’re going to warranty his engine after using something outside of recommended. Keyboard engineering is saying another weight “should be fine” “should be better” etc with no evidence to back it up.
The OP asked about shearing and fuel dilution, so we both can agree that engine longevity is the reason he asked, you’re just being pig-headed. What other reason does anyone ask about engine oil? What other purpose does oil serve? And what evidence do you have that running any other oil is better for the engine long term?
Nothing I said in my first post was controversial. I suggested differing to the engineers and the owners manual. But you picked it out and called me up personally, again, so surely you did ask for my opinion Grumpy.
Also, just some rational thought...does the 2019 Camaro have start/stop? If not, that’s one huge thing that will differ internally and therefore with the oil requirements. As I’m sure rational thinkers like Grumpy know, the bearings on start/stop motors are coated / treated differently. Tolerances may or may not be different. Just because the engine is the same displacement doesn’t mean any of the internals even have the same PN, let alone oil requirements. So in this case, what’s rational Grumpy? Assuming everything is the same between the engines and running 0w40? Or using what’s in the damned owner’s manual rather than thinking you know better!