I usually use fram ultra 3614. Now that I have an ultra cool oil filter I use the 3600. I've also used mobil 1. I use the ultra based on what I've seen here and youtube.
You can use the sae 60 after an oil change if put in it while the engine is hot and drive across the country without shutting the engine off. Now you can change it with the proper spec.
Did you watch the video? Why did they destroy the evidence?
I’m not saying I believe his theory, just seems odd. Did we really have the technology back then.