My garage puts Mobil 1 in and I’m happy with it. One of the first things I noticed about the ls motor is how smooth it is. 

my understanding is that more important than brand of oil is putting the right weight in based on how you drive your car. Ie normal, track days or high power output cars. 
not my specialty but my thoughts. Im happy to let the experts at the garage I use guide me. 
do love discussing all things corvette thou of course lol 

dave 

I do my own oil changes...Mobil 1 full synthetic for my  2009 as per mftr recommendation with filter I get from AC DElco filter from the dealer.  

In my 1980 C3 I run Valvoline Racing (not a synthetic) with highest ZDP content and a WIX filter...did some extensive research on this when I bought the car as the old engines needed this ZDP and oils have changed so much.  

My last dealer C7 GS oil change was $389.95 (dry sump), before tax. Last year it was $219.95 before tax. Explanation from the dealer - "We're loosing money on Corvette oil changes." 

Sure enough, they showed me 0W40 Mobil 1 Supercar on amazon at $69 a liter, which is crazy! But I found the same for $94 for a pack of 6, and since I do my own changes on my other vehicles I'll start doing the Vette as well.

For me with synthetic, I now do 1x a year. With mineral, 2x a year. Not loyal to any brand unless heavily recommended by manufacturer like Chevy does with Mobil 1.     

Might find this recent article interesting.  https://www.hemmings.com/stories/what-the-changing-chemistry-of-engine-oil-means-for-you/

Write-up includes a lengthy discussion about contaminants, detergents and octane boost - and what is coming in 2026.