I know well, that HenryMac test--The test even made it to Alaska!! Myself, I've been cautious of 100% synthetics--mostly just because of the early issues involving full synthetics--I'm sure you remember!--The guy who changed over to this on a engine fully broke in on "dinosaur" stuff--and suddenly, he had a major oil burner on his hands!--These issues probably don't happen anymore, but it's still hard to ignore "experience" over knowledge!
Yeah I remember that... wasn't that guy driving a Stanley Steamer
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My experience is that I've used Mobil 1 for over 20 years. The vehicles we've had are pretty diverse: '27 Ford Roadster Pick Up, '31 Model A Sedan, '65 C10, '69 Camaro, '72 Nova, '97 Tacoma, '01 CRV, '02 Tacoma, and '07 Wrangler. I've always done my own oil changes and have never had a problem.
On a side note: My (2) old Fords, they both have newer motors. The '31 has a '72 small block Chevy and the '27 has a '85 small block Ford. I initially used dinosaur oil to break in the motors, then switched to Mobil 1. The engine builder suggested that.
I did extensive research on what are the best motor oils for use in Direct Injection Turbocharged motors when we bought our Ranger.
What I learned is a "Synthetic Blend" is not the best oil to use in these motors. Sure, it's less expensive, but not the best choice. A low "volatility test (ASTM D5800) score is crucial to minimize valve deposits, and you want an oil that performs well at elevated temperatures. And, again, a blend is not the best choice.
I've always used Mobil 1's "Silver label" in the past and was surprised to learn it isn't the best choice either. Mobil 1 developed their "Annual Protection" line specifically for turbo charged motors like the 2019 / 2020 Rangers have.
Opinions may vary, but test results on the other hand clearly show that synthetic blends aren't the best choice.